Unit 2 Lesson 7 Part 2: Rounding to the Nearest Hundred Copyright © 2009 Kelly Mott.
Unit 2 Lesson 8 Part 2: Rounding to the Nearest Ten (3 Digits) Copyright © 2009 Kelly Mott.
33
Unit 2 Lesson 8 Part 2: Rounding to the Nearest Ten (3 Digits) Copyright © 2009 Kelly Mo
-
Upload
jevon-palk -
Category
Documents
-
view
232 -
download
6
Transcript of Unit 2 Lesson 8 Part 2: Rounding to the Nearest Ten (3 Digits) Copyright © 2009 Kelly Mott.
Unit 2 Lesson 8 Part 2: Rounding to the Nearest Ten (3 Digits)
Copyright © 2009 Kelly Mott
Unit 2 Lesson 8 Part 2: Rounding to the Nearest Ten (3 Digits)
Copyright © 2009 Kelly Mott
Part 1: Rounding to the Nearest Ten (3 Digits) Number Line
Copyright © 2009 Kelly Mott
What is 136 rounded to the nearest ten?• Find 136 on the number line. Put a dot.• Is 136 closer to 130 or 140? _______________• Answer: 136 rounded to the nearest ten is
_____________________
130 131 132 133 134 135 136 137 138 139 140
Copyright © 2009 Kelly Mott
Round to the Nearest Ten
What is 423 rounded to the nearest ten?• Find 423 on the number line. Put a dot.• Is 423 closer to 420 or 430? _______________• Answer: 423 rounded to the nearest ten is
_____________________
420 421 422 423 424 425 426 427 428 429 430
Copyright © 2009 Kelly Mott
Round to the Nearest Ten
What is 675 rounded to the nearest ten?• Find 675 on the number line. Put a dot.• Is 675 closer to 670 or 680? _______________• Answer: 675 rounded to the nearest ten is
_____________________
670 671 672 673 674 675 676 677 678 679 680
Copyright © 2009 Kelly Mott
Round to the Nearest Ten
*Hint: When we have 5 or more, we round up.
Copyright © 2009 Kelly Mott
Part 2: Rounding to the Nearest Ten (3 Digits) without a Number Line
Copyright © 2009 Kelly Mott
Practice # 1STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
139
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 2STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
253
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 3STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
376
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 4STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
521
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 5STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
842
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 6STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
908
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 7STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
757
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 8STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
133
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 9STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
425
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 10STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
692
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 11STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
369
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 12STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
113
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 13STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
234
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 14STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
857
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 15STEPS:1. Underline the place you are
rounding to.2. Write down the number(s) to
the left of the underlined digit.3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
305
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Copyright © 2009 Kelly Mott
Part 3: CHALLENGE
Copyright © 2009 Kelly Mott
Practice # 1:STEPS:
1. Underline the place you are rounding to.
2. Write down the number(s) to the left of the underlined digit.
3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
4,833
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 2 :STEPS:
1. Underline the place you are rounding to.
2. Write down the number(s) to the left of the underlined digit.
3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
6,117
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 3:STEPS:
1. Underline the place you are rounding to.
2. Write down the number(s) to the left of the underlined digit.
3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
7,438
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 4 :STEPS:
1. Underline the place you are rounding to.
2. Write down the number(s) to the left of the underlined digit.
3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
3,872
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Practice # 5:STEPS:
1. Underline the place you are rounding to.
2. Write down the number(s) to the left of the underlined digit.
3. Circle the number to the right.4. If the number to the right is 0,
1, 2, 3, or 4, then the underlined number stays the same.
5. If the number to the right is 5, 6, 7, 8, or 9, then the underlined number needs to go up 1 more number.
6. Every number to the right of the underlined number becomes a zero.
Copyright © 2009 Kelly Mott
Round to the nearest ten:
5,306
Hint for the Circled Number:4 or less just ignore.5 or more, add 1 more.
Does this make sense?
Copyright © 2009 Kelly Mott
HOMEWORKTeacher Worksheet: Rounding to Nearest Ten 3 Digits WorksheetMath Steps Pages: noneRe-teach Page: none
Copyright © 2009 Kelly Mott
You can use the Rounding Pyramid:
51
2
84
0
93
76
1. Underlined number rounds up one
2. Add the zeros
1. Underlined number stays the same
2. Add the zeros
Copyright © 2009 Kelly Mott
