simonrigelsford.files.wordpress.com€¦ · Web view14 - Mental methods for addition and...
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nit 1 - Addition and subtraction within 10
1. Drill: Addition facts within 10
2. Drill: Subtraction facts within 10
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nit 1 - Addition and subtraction within 10
3. Drill: Single-digit addition facts
4. Drill: Subtraction facts within 20 with single-digit answers
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5. Drill: Numbers to 100
6. Drill: Add a single-digit number to a two-digit number
7. Drill: Subtract a single-digit number from a two-digit number
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47. Count in multiples of 10Count from 0 to 100 in steps of 10. 0, , 100
48. Add two multiples of 10Complete the questions below using mental methods.40 + 40 = 80 60 + 10 = 70 50 + 40 = 90 50 + 50 = 100
49. Count back in multiples of 10Count back from 100 to 0 in steps of 10. 100, , 0
50. Subtract two multiples of 10Complete the questions below using mental methods.90 – 20 = 70 50 – 40 = 10 90 – 60 = 30 80 – 50 = 30
51. Relate number bonds to 100 to number bonds to 10Complete the questions below using knowledge of number bonds to 100.
80 + = 100 20 + = 100100 – 20 = 80 100 – 80 = 20
52. Count on in tensFor the questions below, write the next seven numbers, counting on in tens. 5, 15, 25,
7, 17, 27,
53. Add a multiple of 10Complete the questions below using mental methods.42 + 20 = 62 22 + 50 = 72 18 + 80 = 98 27 + 40 = 67
54. Count back in tensFor the questions below, write the next seven numbers, counting back in tens. 99, 89, 79,
94, 84, 74,
55. Subtract a multiple of 10Complete the questions below using mental methods.74 – 30 = 44 87 – 50 = 37 86 – 70 = 16 93 – 60 = 33
20 80
10 20 30 40 50 60 70 80 90
90 80 70 60 50 40 30 20 10
35 45 55 65 75 85 95
37 47 57 67 77 87 97
69 59 49 39 29 19 9
64 54 44 34 24 14 4
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56. Add two two-digit numbers, bridging on a number lineComplete the questions below by bridging on a number line. 51 + 27 = 78 47 + 36 = 83 59 + 17 = 76
57. Add two two-digit numbers by partitioningComplete the questions below by partitioning. 48 + 44 = 92 66 + 29 = 95 47 + 15 = 62 28 + 53 = 81
58. Add two two-digit numbers using the column methodComplete the questions below using column addition.44 + 33 = 77 46 + 21 = 67 55 + 35 = 90
38 + 25 = 63 46 + 28 = 74 66 + 19 = 85
59. Subtract a two-digit number, bridging on a number lineComplete the questions below by bridging on a number line. 73 – 42 = 31 95 – 27 = 68 81 – 49 = 32 83 – 15 = 68
60. Find the difference on a number lineFor the questions below, find the difference by counting up in tens and ones on a number line. 83 – 48 = 35 61 – 29 = 32 74 – 29 = 45
61. Find the difference by bridging on a number lineFor the questions below, find the difference by counting up on a number line, bridging ones. 79 – 45 = 34 93 – 46 = 47 57 – 38 = 19 73 – 66 = 7
62. Subtract a two-digit number by partitioningComplete the questions below by partitioning. 59 – 22 = 37 70 – 29 = 41 84 – 19 = 65 81 – 34 = 47
63. Subtract a two-digit number using the column methodComplete the questions below using column subtraction.66 – 31 = 35 88 – 54 = 34 70 – 28 = 42
76 – 28 = 48 52 – 15 = 37 81 – 56 = 25
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64. Check by using the inverse operation with two-digit numbersUse the inverse operation to check the answers to these calculations. 45 + 43 = 8888 – 43 = 45 or 88 – 45 = 43
78 – 19 = 5959 + 19 = 78 or 19 + 59 = 78
65. Solve missing number problems for addition and subtraction with two-digit numbersComplete the questions below by finding the missing numbers.
= 35 + 25 = 72 – 39 38 + = 70
+ 26 = 84 – 44 = 47 93 – = 37
66. Round to the nearest 10Round the numbers below to the nearest 10. 77 ≈ 80 51 ≈ 50 34 ≈ 30
86 ≈ 90 25 ≈ 30 95 ≈ 100
67. Calculate number bonds to 100Complete the questions using knowledge of number bonds to 100.
56 + = 100 35 + = 100 84 + = 100 53 + = 100
60 33 32
58 91 56
44 65 4716
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68. Recognise representations for numbers to 1000Write the numbers represented by the blocks below.
69. Write numbers to 1000 in digitsWrite the numbers below in digits. Seven hundred and seventeen Four hundred
Six hundred and fifty Two hundred and four
70. Write numbers to 1000 in wordsWrite the numbers below in words. 787 Seven hundred and eighty-seven
900 Nine hundred
260 Two hundred and sixty
903 Nine hundred and three
71. Partition three-digit numbersPartition the numbers below into hundreds, tens and ones.
791 = + + 333 = + +
207 = + 780 = +
788632
990404
717
650
400
204
700 90 1 300 30 3
200 7 700 80
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72. Compare three-digit numbersFor the questions below, write < or >
885 ____ 88 828 _____ 288 345 _____ 354 678 _____ 670
73. Order three-digit numbersOrder each set of numbers from smallest to largest. 232, 223, 332, 32, 323
777, 77, 757, 575, 775
74. Count on from a three-digit number in onesFor the questions below, write the next seven numbers. 93, 94, 95,
267, 268, 269,
604, 605, 606,
395, 396, 397,
75. Add a single-digit number to a three-digit numberComplete the questions below using mental methods.269 + 3 = 272 448 + 6 = 454 295 + 7 = 302 398 + 8 = 406
76. Count back from a three-digit number in onesFor the questions below, write the next seven numbers. 104, 103, 102,
472, 471, 470,
216, 215, 214,
407, 406, 405,
77. Subtract a single-digit number from a three-digit numberComplete the questions below using mental methods.373 – 5 = 368 493 – 6 = 487 603 – 8 = 595 501 – 7 = 494
78. Solve missing number problems for addition and subtraction of ones with three-digit numbers
Complete the questions below by finding the missing numbers.
= 295 + 9 = 512 – 6 294 + = 300
+ 6 = 285 – 4 = 388 404 – = 398
> ><>
32 223 232 323 332
77 575 757 775 777
96 97 98 99 100 101 102
270 271 272 273 274 275 276
607 608 609 610 612 613 614
398 399 400 401 402 403 404
101 100 99 98 97 96 95
469 468 467 466 465 464 463
213 212 211 210 209 208 207
404 403 402 401 400 399 398
304 506 6
279 392 6
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79. Add two multiples of 10 beyond 100Complete the questions below using mental methods.250 + 30 = 280 390 + 40 = 430 570 + 70 = 640
80. Solve missing number problems for addition with multiples of 10 with three-digit answersComplete the questions below by finding the missing numbers.
310 + = 370 280 + = 320 670 + = 730
81. Count on in tens from a three-digit numberFor the questions below, write the next seven numbers, counting on in tens. 243, 253, 263,
541, 531, 521,
82. Add a multiple of 10 to a three-digit number mentallyComplete the questions below using mental methods. 332 + 70 = 402 263 + 60 = 323 744 + 80 = 824 298 + 50 = 348
83. Subtract two multiples of 10 beyond 100Complete the questions below using mental methods.490 – 40 = 450 910 – 50 = 860 520 – 70 = 450
84. Solve missing number problems for subtraction with multiples of 10 with three-digit answers
Complete the questions below by finding the missing numbers.
660 – = 610 330 – = 280 670 – = 590
85. Count back in tens from a three-digit numberFor the questions below, write the next seven numbers, counting back in tens. 332, 322, 312,
869, 859, 849,
86. Subtract a multiple of 10 from a three-digit number mentallyComplete the questions below using mental methods. 306 – 60 = 246 411 – 70 = 341 825 – 80 = 745 888 – 90 = 798
87. Solve missing number problems for addition and subtraction of tens with three-digit numbers
Complete the questions below by finding the missing numbers.
= 484 + 20 = 636 – 50 222 + = 272
+ 50 = 232 – 30 = 303 512 – = 462
60 40 60
273 283 293 303 313 323 333
511 501 491 481 471 461 451
50 50 80
302 292 282 272 262 252 242
839 829 819 809 799 789 779
504 586 50
182 333 50
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88. Count on or back in multiples of 100Count from 0 to 1000 in steps of 100. 0, , 1000
Count back from 1000 to 0 in steps of 100. 1000, , 0
89. Add and subtract two multiples of 100 within 1000Complete the questions below using mental methods. 300 + 300 = 600 800 – 100 = 700 400 + 300 = 700 900 – 500 = 400
90. Solve missing numbers for addition and subtraction with multiples of 100 within 1000Complete the questions below by finding the missing numbers.
300 + = 500 500 + = 800 500 + = 600
900 – = 400 600 – = 500 700 – = 200
91. Count on in hundredsFor the questions below, write the next seven numbers, counting on in steps of 100. 64, 164, 264,
10, 110, 210,
92. Add a multiple of 100 to a three-digit numberComplete the questions below using mental methods. 365 + 400 = 765 504 + 400 = 904 400 + 326 = 726 500 + 187 = 687
93. Count back in hundredsFor the questions below, write the next seven numbers, counting back in steps of 100. 922, 822, 722,
901, 801, 701,
94. Subtract a multiple of 100 from a three-digit numberComplete the questions below using mental methods. 888 – 200 = 688 743 – 400 = 343 513 – 500 = 13 962 – 300 = 662
95. Solve missing number problems for addition and subtraction of hundreds with three-digit numbers
Complete the questions below by finding the missing numbers.
= 452 + 200 = 973 – 900 265 + = 565
+ 200 = 608 – 400 = 182 831 – = 131
100 200 300 400 500 600 700 800 900
900 800 700 600 500 400 300 200 100
200 300 100
500 100 500
364 464 564 664 764 864 964
310 410 510 610 710 810 910
622 522 422 322 222 122 22
601 501 401 301 201 101 1
652 73 300
508 582 700
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96. Add numbers with up to three digits using the column methodComplete the questions below using column addition. 418 + 53 = 471 557 + 57 = 614 672 + 190 = 826 265 + 237 = 502
97. Subtract numbers with up to three digits using the column methodComplete the questions below using column subtraction. 551 – 38 = 513 739 – 89 = 650 670 – 225 = 445 854 – 479 = 375
98. Solve missing number problems for addition and subtraction with three-digit numbersComplete the questions below by finding the missing numbers.
185 + = 718 + 458 = 647 – 309 = 352 914 – = 456
99. Round to the nearest 100Round the numbers below to the nearest 10. 344 ≈ 340 627 ≈ 630 666 ≈ 670 904 ≈ 900 399 ≈ 400
100. Round to the nearest 10Round the numbers below to the nearest 100. 344 ≈ 300 627 ≈ 600 666 ≈ 700 904 ≈ 900 399 ≈ 400
101. Check by using the inverse operation with three-digit numbersCheck the answers to these calculations by using the inverse operation. 352 + 282 = 643643 – 282 = 352 or 643 – 352 = 282
704 – 275 = 429429 + 275 = 704 or 275 + 429 = 704
533 189 661 458
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102. Recognise representations for numbers to 10000Write the numbers shown by the blocks below in digits.
103. Write numbers to 10000 in digitsWrite the numbers below in digits. Two thousand, four hundred and eighty-seven Eight thousand, nine hundred
Seven thousand and twelve Three thousand and one
104. Write numbers to 10000 in wordsWrite the numbers below in words. 4224 Four thousand, two hundred and twenty-four
8038 Eight thousand and thirty-eight
9100 Nine thousand, one hundred
5002 Five thousand and two
105. Identify the digit in each place value for four-digit numbersFor the questions below, write the digit in each place value. 6,923
Thousands:
Hundreds:
Tens:
Ones:
2,193
Hundreds:
Ones:
Thousands:
Tens:
4,027
Ones:
Hundreds:
Tens:
Thousands:
57733240
55002060 5009
2487
7012
8900
3001
6
3
2
9
1
9
2
3
7
4
2
0
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106. Identify the value of each digit in four-digit numbersFor the questions below, write the value of each digit. 7,638
8 represents:
7 represents:
6 represents:
3 represents:
8,105
1 represents:
8 represents:
5 represents:
6,023
3 represents:
2 represents:
6 represents:
107. Partition four-digit numbersPartition the numbers below.
8253 = + + +
2121 = + + +
9046 = + +
7709 = + +
108. Compare four-digit numbersFor the questions below, write < or >
2848 ____ 8248 6398 ____ 6099 3824 ____ 3818 8290 ____8292
109. Order four-digit numbersOrder each set of numbers from smallest to largest. 2752, 277, 2572, 7225, 2725
533, 5333, 3535, 3553, 5353
8
30
600
7000
100
5
8000
1
8000
40
8000 200 50 3
9000 40 6
7000 700 9
2000 100 20 1
< <>>
277 2572 2725 2752 7225
533 3535 3553 5333 5353
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110. Count on in ones from a four-digit numberFor the questions below, write the next seven numbers, counting in ones. 6093, 6094, 6095,
4996, 4997, 4998,
111. Add a single-digit number to a four-digit numberComplete the questions below using mental methods. 4096 + 5 = 4101 7647 + 8 = 7655 1995 + 9 = 2004 8992 + 8 = 9000
112. Count back in ones from a four-digit numberFor the questions below, write the next seven numbers, counting back in ones. 3105, 3104, 3103,
2006, 2005, 2004,
113. Subtract a single-digit number from a four-digit numberComplete the questions below using mental methods. 5554 – 8 = 5546 6101 – 5 = 6096 3000 – 7 = 2993 4004 – 9 = 3995
114. Count on in tens from a four-digit numberFor the questions below, write the next seven numbers, counting on in tens. 4745, 4755, 4765,
7342, 7352, 7362,
115. Add a multiple of 10 to a four-digit numberComplete the questions below using mental methods. 7050 + 60 = 7110 6288 + 40 = 6328 2985 + 50 = 3035 1998 + 70 = 2068
116. Count back in tens from a four-digit numberFor the questions below, write the next seven numbers, counting back in tens. 5465, 5455, 5445,
6044, 6034, 6024,
117. Subtract a multiple of 10 from a four-digit numberComplete the questions below using mental methods. 3595 – 50 = 3545 2312 – 40 = 2272 7005 – 70 = 6935 1044 – 80 = 964
6096 6097 6098 6099 6100 6101 6102
4999 5000 5001 5002 5003 5004 5005
3102 3101 3100 3099 3098 3097 3096
2003 2002 2001 2000 1999 1998 1997
4775 4785 4795 4805 4815 4825 4835
7372 7382 7392 7402 7412 7422 7432
5435 5425 5415 5405 5395 5385 5375
6014 6004 5994 5984 5974 5964 5954
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118. Add two multiples of 100 beyond 1000Complete the questions below using mental methods. 700 + 500 = 1200 900 + 800 = 1700 2500 + 500 = 3000 4700 + 800 = 5500
119. Count on in hundreds from a four-digit numberFor the questions below, write the next seven numbers, counting on in hundreds. 5355, 5455, 5555,
4820, 4720, 4620,
120. Add a multiple of 100 to a four-digit numberComplete the questions below using mental methods. 3333 + 500 = 3833 4830 + 500 = 5330 6655 + 800 = 7455 2999 + 700 = 3699
121. Subtract a multiple of 100 from a four-digit multiple of 1005500 – 400 = 5100 1700 – 900 = 800 2300 – 700 = 1600 7300 – 800 = 6500
122. Count back in hundreds from a four-digit numberFor the questions below, write the next seven numbers, counting back in hundreds. 1766, 1666, 1566,
6466, 6366, 6266,
123. Subtract a multiple of 100 from a four-digit number1303 – 500 = 803 2660 – 600 = 2060 6222 – 700 = 5522 7330 – 900 = 6430
124. Add and subtract a multiple of 1000 from a four-digit number2749 + 6000 = 8749 4959 + 3000 = 7959 6440 – 6000 = 440 9437 – 4000 = 5437
125. Subtract mentally by finding the difference, targeting the ten, hundred or thousand
Complete the questions below by finding the difference, targeting the ten, hundred or thousand. 3006 – 2797 = 209 5000 – 4546 = 454 3004 – 2970 = 34 5200 – 4958 = 242
5655 5755 5855 5955 6055 6155 6255
4520 4420 4320 4220 4120 4020 3920
1466 1366 1266 1166 1066 966 866
6166 6066 5966 5866 5766 5666 5566
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126. Add four-digit numbers using column additionComplete the questions below using column addition. 5976 + 68 = 6044 5555 + 918 = 6473 769 + 652 = 1421 4844 + 4188 = 9032
127. Subtract four-digit numbers using column subtractionComplete the questions below using column subtraction. 6558 – 69 = 6489 3312 – 158 = 3154 8266 – 1491 = 6775 6520 – 5558 = 962
128. Exchange across zero to subtract four-digit numbers using column subtraction8008 – 66 = 7942 5004 – 885 = 4119 6006 – 4374 = 1632 7000 – 4727 = 2273
129. Solve missing number problems for addition and subtraction with four-digit numbers
Complete the questions below by finding the missing numbers.
= 4965 + 3915 + 4535 = 9372
7528 – = 2694 – 2638 = 2828
130. Round to the nearest 1000Round the numbers below to the nearest 1000. 5293 ≈ 5000 3288 ≈ 3000 6919 ≈ 7000 6884 ≈ 7000
131. Round to the nearest 1000, 100 and 10Round the numbers below. 3 6 3 7
Nearest 10 ≈
Nearest 100 ≈
Nearest 1000 ≈
1 4 5 4
Nearest 10 ≈
Nearest 100 ≈
Nearest 1000 ≈
4 7 9 6
Nearest 10 ≈
Nearest 100 ≈
Nearest 1000 ≈
132. Check answers using the inverse operation with four-digit numbersCheck the answers to these calculations by using the inverse operation. 2794 + 1254 = 40484048 – 1254 = 2794 or 4048 – 2794 = 1254
8102 – 3456 = 46464646 + 3456 = 8102 or 3456 + 4646 = 8102
48378880
54664834
4000
3600
3640
1000
1500
1450
5000
4800
4800
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133. Write numbers up to one million in digitsWrite the numbers below in digits. Two hundred and ten thousand, two hundred and one
Three hundred thousand, three hundred and three
Eight hundred and eight thousand Five hundred and fifty thousand and fifty
134. Write numbers up to one million in wordsWrite the numbers below in words. 271,207 Two hundred and seventy-one thousand, two hundred and seven
384,000 Three hundred and eighty-four thousand
800,080 Eight hundred thousand and eighty
210,900 Two hundred and ten thousand, nine hundred
135. Identify the digit in each place value for six-digit numbersFor the questions below, write the digit of each place value. 573,218
Hundred-thousands:
Ten-thousands:
Thousands:
Hundreds:
Tens:
Ones:
643,752
Hundreds:
Hundred-thousands:
Ten-thousands:
Ones:
Thousands:
Tens:
297,138
Ten-thousands:
Tens:
Ones:
Hundred-thousands:
Thousands:
Hundreds:
136. Identify the value of each digit in six-digit numbersFor the questions below, write the value of each digit. 45,602
4 represents:
5 represents:
6 represents:
0 represents:
2 represents:
528,937
9 represents:
8 represents:
7 represents:
5 represents:
3 represents:
2 represents:
409,375
0 represents:
3 represents:
4 represents:
5 represents:
7 represents:
9 represents:
210 201
808 000
300 303
550 050
5
7
3
2
4
6
8
5
1
2
3
7
1
9
7
2
8
3
40 000
20 000
2
0
600
5 000
900
30
500 000
7
8 000
9 000
0
70
5
400 000
300
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137. Partition six-digit numbersPartition the numbers below.
80627 = + + +
755766 = + + + + +
626026 = + + + +
138. Compare numbers with up to six digitsWrite > or < in each box.
464646 644444 200000 99999 696222 669666
458458 485459 265526 265656 66000 600000
139. Order numbers with up to six digitsOrder each set of numbers from smallest to largest. 660 000, 60 900, 690 000, 9 600, 669 000
45 555, 540 444, 54 444, 545 555, 554 444
140. Round to the nearest 10 000, 1 000, 100 or 10For the questions below, round each number to the specified degree of accuracy. 351,454Round to the nearest…
Hundred thousand:
Ten thousand:
Thousand:
Hundred:
Ten:
160,165Round to the nearest…
Hundred thousand:
Ten thousand:
Thousand:
Hundred:
Ten:
656,606Round to the nearest…
Hundred thousand:
Ten thousand:
Thousand:
Hundred:
Ten:
80 000 600 20 7
700 000 50 000 5 000 700 60 6
600 000 20 000 6 000 20 6
< > >
< < <
9 600 60 900 660 000 669 000 690 000
45 555 54 444 540 444 545 555 554 444
400 000
351 450
351 500
351 000
350 000
200 000
160 170
162 200
160 000
160 000
700 000
656 610
656 600
657 000
660 000
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141. Count on in hundreds from a six-digit numberFor the questions below, write the next seven numbers, counting in hundreds. 59308, 59408, 59508,
299599, 299699, 299799,
142. Add a multiple of 100 to a six-digit numberComplete the questions below using mental methods. 6055 + 800 = 6 855
38850 + 500 = 39 350
469705 + 800 = 470 505
899411 + 600 = 900 011
143. Count back in hundreds from a six-digit numberFor the questions below, write the next seven numbers, counting back in hundreds. 100533, 100433, 100333,
234322, 234222, 234122,
144. Subtract a multiple of 100 from a six-digit numberComplete the questions below using mental methods. 22922 – 700 = 22 222
10395 – 500 = 9 895
313131 – 600 = 312 531
100522 – 600 = 99 922
145. Count on in thousands from a six-digit numberFor the questions below, write the next seven numbers, counting in thousands. 93444, 94444, 95444,
694400, 695400, 696400,
146. Add a multiple of 1000 to a six-digit numberComplete the questions below using mental methods. 25800 + 5000 = 30 800
97900 + 6000 = 103 900
585585 + 7000 =592 585
399933 + 8000 = 407 933
147. Count back in thousands from a six-digit numberFor the questions below, write the next seven numbers, counting back in thousands. 104450, 103450, 102450,
465333, 464333, 463333,
148. Subtract a multiple of 1000 from a six-digit numberComplete the questions below using mental methods. 39393 – 3000 = 36 393
451900 – 5000 = 446 900
275755 – 6000 = 269 755
300300 – 7000 = 293 300
59608 59708 59808 59909 60008 60108 60208
299899 299999 300099 300199 300299 300399 300499
100233 100133 100033 99933 99833 99733 99633
234022 233922 233822 233722 233622 233522 233422
96444 97444 98444 99444 100444 101444 102444
697400 698400 699400 700400 701400 702400 703400
101450 100450 99450 98450 97450 96450 95450
462333 461333 460333 459333 458333 457333 456333
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149. Count on in steps of 10 000 from a six-digit numberFor the questions below, write the next seven numbers, counting in ten-thousands. 73300, 83300, 93300,
678000, 688000, 698000,
150. Add a multiple of 10 000 to a six-digit numberComplete the questions below using mental methods. 77000 + 70000 = 147 000 675000 + 50000 = 725 000 464600 + 60000 = 524 600
151. Count back in steps of 10 000 from a six-digit numberFor the questions below, write the next seven numbers, counting back in ten-thousands. 146600, 136600, 126600,
835900, 825900, 815900,
152. Subtract a multiple of 10 000 from a six-digit numberComplete the questions below using mental methods. 199000 – 90000 = 109 000 343434 – 70000 = 273 434 646004 – 80000 = 566 004
153. Add a multiple of 100 000 to a six-digit number50000 + 500000 = 550 000 150000 + 600000 = 750 000 343400 + 400000 = 743 400
154. Subtract a multiple of 100 000 from a six-digit number777000 – 700000 = 77 000 550000 – 300000 = 250 000 750000 – 200000 = 550 000
155. Solve missing number addition problems with six-digit numbers mentallyComplete the questions below by finding the missing numbers. 59500 + = 62500
195500 + = 215500
330003 + = 630003
399770 + = 400470
156. Solve missing number subtraction problems with six-digit numbers mentally 31450 – = 30950
550500 – = 50500
333300 – = 273300
602020 – = 599020
103300 113300 123300 133300 143300 153300 163300
708000 718000 728000 738000 748000 758000 768000
116600 106600 96600 86600 76600 66600 56600
805900 795900 785900 775900 765900 755900 745900
3 000 20 000
300 000 600
500
60 000 3 000
500 000
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157. Add large numbers using column additionComplete the questions below using column addition. 7873 + 7575 = 15 448
54967 + 50963 = 105 930
214892 + 88122 = 303 014
376857 + 192754 = 569 611
158. Subtract large numbers using column subtractionComplete the questions below using column subtraction. 11711 – 2188 = 9 523
124242 – 44638 = 79 604
112269 – 86362 = 25 907
576191 – 267548 = 308 643
159. Exchange across zero to subtract large numbers using column subtraction10009 – 6525 = 3 484
123004 – 50018 = 72 986
706002 – 19538 = 686 464
645000 – 337457 = 307 543
160. Solve missing number problems for addition and subtraction with large numbersComplete the questions below by finding the missing numbers.
= 474733 + 216793 + 58392 = 292020
861790 – = 147277 – 57923 = 368156
161. Solve missing digit addition problemsComplete the addition questions below by finding the missing digits.
162. Solve missing digit subtraction problemsComplete the subtraction questions below by finding the missing digits.
138 485
426 079714 513
691 526
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163. Write numbers to 100 in Roman numeralsWrite the numbers below in Roman numerals. 26 = XXVI 63 = LXIII 36 = XXXVI 94 = XCIV 49 = XLIX
77 = LXXVII 28 = XXVIII 82 = LXXXII 54 = LIV 45 = XLV
164. Read Roman numerals to 100Write the numbers represented by Roman numerals below. VI = 6 IX = 9 XV = 15 XXVIII = 28 XXXVI = 36
XXXVIII = 38 XLII = 42 XLV = 45 LI = 51 LIV = 54
LXIX = 69 LXXIV = 74 LXXXI = 81 XCVII = 97 XCIX = 99
165. Write numbers to 1000 in Roman numeralsWrite the numbers below in Roman numerals. 133 = CXXXIII 244 = CCXLIV 301 = CCCI 449 = CDXLIX 505 = DV
560 = DLX 648 = DCXLVIII 792 = DCCXCII 870 = DCCCLXX 972 = CMLXXII
166. Read Roman numerals to 1000Write the numbers represented by Roman numerals below. CIV = 104 CCXXVIII = 228 CCCXLV = 345 CCCLXXXVI = 386 CCCXCIX = 399
CDIII = 403 CDXC = 490 DXLI = 541 DCIV = 604 DCXL = 640
DCLXVI = 666 DCCXCVII = 797 DCCCX = 810 CML = 950 CMLXXXIV = 984
167. Subtract to make a negative answer5 – 9 = -4 4 – 5 = -1 1 – 6 = -5
168. Add to a negative number-3 + 7 = 4 -2 + 8 = 6 -7 + 8 = 1
169. Complete number sequences involving negative numbersFor the questions below, write the next numbers in each sequence. -11, -9, -7,
8, 5, 2,
-12, -9, -6,
170. Subtract to make a negative answer with larger numbers39 – 85 = -46 8 – 89 = -81 58 – 64 = -6
171. Add to a negative number with larger numbers-32 + 53 = 21 -7 + 67 = 60 -84 + 22 = -62
-5 -3 -1 1 3 5 7
1 0 -2 -4 -6 -8 -10
-3 0 3 6 9 12
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172. Write numbers up to 10 million in digitsWrite the numbers below in digits. Four million, seven hundred and twenty thousand and twenty
Four million, fifty thousand and eighty
Five million, three thousand and five Three million, two hundred thousand and twelve
173. Write numbers up to 10 million in wordsWrite the numbers below in words. 3,203,567 Three million, two hundred and three thousand, five hundred and sixty-seven
6,210,000 Six million, two hundred and ten thousand
5,050,050 Five million, fifty thousand and fifty
3,000,080 Three million and eighty
174. Identify the digit in each place value for seven-digit numbersFor the questions below, write the digit of each place value. 2,447,891
Millions:
Hundred thousands:
Ten thousands:
Thousands:
Hundreds:
Tens:
Ones:
2,896,051
Hundred thousands:
Tens:
Millions:
Thousands:
Ones:
Ten thousands:
Hundreds:
1,471,380
Ones:
Hundreds:
Hundred thousands:
Thousands:
Ten thousands:
Millions:
Tens:
175. Identify the value of each digit in seven-digit numbersFor the questions below, write the value of each digit. 7,035,690
7 represents:
3 represents:
5 represents:
6 represents:
9 represents:
4,802,695
6 represents:
2 represents:
5 represents:
4 represents:
9 represents:
8 represents:
1,279,068
2 represents:
9 represents:
1 represents:
8 represents:
6 represents:
7 represents:
4 720 020
5 003 005
4 050 080
2 200 012
9
8
1
6
2
5
0
9
2
8
7
4
4
1
1
0
7
1
4
3
8
7 000 000
800 000
90
600
5 000
30 000
600
90
4 000 000
5
2 000
70 000
200 000
60
8
1 000 000
9 000
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176. Partition seven-digit numbersPartition the numbers below.
6,609,012 = + + + +
5,265,263 = + + + + + +
7,280,989 = + + + + +
177. Order numbers with up to seven digitsOrder each set of numbers from smallest to largest. 500 000, 54 000, 4 055 000, 4 500 000, 4 504 000
9 090, 8 090 000, 9 800 000, 900 000, 8 800 000
178. Round to the nearest 10, 100, 1000, 10 000, 100 000 and 1 000 000For the questions below, round each number to the specified degree of accuracy. 6,901,098Round to the nearest…
Million:
Hundred thousand:
Ten thousand:
Thousand:
Hundred:
Ten:
1,208,917Round to the nearest…
Million:
Hundred thousand:
Ten thousand:
Thousand:
Hundred:
Ten:
3,106,307Round to the nearest…
Million:
Hundred thousand:
Ten thousand:
Thousand:
Hundred:
Ten:
6 000 000 600 000 9 000 10 2
5 000 000 200 000 60 000 5 000 200 60
7 000 000 200 000 80 000 900 80 9
3
54 000 500 000 4 055 000 4 500 000 4 504 000
9 090 900 000 8 090 000 8 800 000 9 800 000
6900000
6901100
6901100
6901000
6900000
7000000
1200000
1298920
1208900
1209000
1210000
1000000
3100000
3106310
3106300
3106000
3110000
3000000