Rounding Numbers

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ROUNDING NUMBERS Remember: If a number is 4 or lower, round down If a number is 5 or higher round up

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Rounding Numbers. Remember: If a number is 4 or lower, round down If a number is 5 or higher round up. Examples. Round 29 to the nearest ten Underline the 2 because it is in the tens place Put a box around the 9, the 9 is the number that you look at to figure out the rule - PowerPoint PPT Presentation

Transcript of Rounding Numbers

Page 1: Rounding Numbers

ROUNDING NUMBERSRemember:

If a number is 4 or lower, round down

If a number is 5 or higher round up

Page 2: Rounding Numbers

EXAMPLES

Round 29 to the nearest ten Underline the 2 because it is in the tens

place Put a box around the 9, the 9 is the number

that you look at to figure out the rule Since 9 is 5 or higher, you would round up You will add one to the 2 which makes it a 3

and every number behind the underlined digit becomes a 0

So 29 rounded to the nearest 10 is 30

Page 3: Rounding Numbers

EXAMPLES

Round 409 to the nearest 100 You would underline the 4 because it is in the

hundreds place and put a box around the 0 The 0 is 4 or lower so you would round down The 4 will stay the same and every number

behind it will become a 0 So 409 rounded to the nearest hundred will

be 400

Page 4: Rounding Numbers

EXAMPLES

Round 273 to the nearest ten You would underline the 7 because it is in the

tens place and put a box around the 3 The 2 in the hundreds place would stay the

same because we are not rounding to that place value, the 3 tells us that we are rounding down so the 7 stays the same and every number behind it becomes a 0

So 273 rounded to the nearest ten would be 270

Page 5: Rounding Numbers

ROUND TO THE NEAREST 10

3773854271,735

Page 6: Rounding Numbers

ROUND TO THE NEAREST HUNDRED

1665513092494,032

Page 7: Rounding Numbers

ROUND TO THE NEAREST TEN

1586425597

Page 8: Rounding Numbers

ROUND TO THE NEAREST 10

1546419013251,508

Page 9: Rounding Numbers

ROUND TO THE NEAREST HUNDRED

451203670448952

Page 10: Rounding Numbers

ROUND TO THE NEAREST HUNDRED

9261,7991,0081,8851,896

Page 11: Rounding Numbers

ORDER THE NUMBERS FROM LEAST TO GREATEST

10,276 24,324 10,129

452,100 327,000 516,200

Page 12: Rounding Numbers

ORDER FROM LEAST TO GREATEST

343 509 124

798 978 879

2,098 2,077 1,399

Page 13: Rounding Numbers

FIND THE MISSING NUMBERS IN THE PATTERNS

4, 7, 10, ____,____,____

12, 15, 18,____,____,____

3, 10, 17,____,____,____