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Unit 2 Lesson 8 Part 2: Rounding to the Nearest Ten (3 Digits) Copyright © 2009 Kelly Mott

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Unit 2 Lesson 8 Part 2: Rounding to the Nearest Ten (3 Digits) Copyright © 2009 Kelly Mott

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Part 1: Rounding to the Nearest Ten (3 Digits) Number Line Copyright © 2009 Kelly Mott

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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

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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

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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.

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Copyright © 2009 Kelly Mott

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Part 2: Rounding to the Nearest Ten (3 Digits) without a Number Line Copyright © 2009 Kelly Mott

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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: 139 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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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: 253 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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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: 376 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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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: 521 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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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: 842 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 6 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: 908 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 7 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: 757 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 8 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: 133 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 9 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: 425 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 10 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: 692 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 11 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: 369 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 12 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: 113 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 13 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: 234 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 14 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: 857 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Practice # 15 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: 305 Hint for the Circled Number: 4 or less just ignore. 5 or more, add 1 more.

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Copyright © 2009 Kelly Mott

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Part 3: CHALLENGE Copyright © 2009 Kelly Mott

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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.

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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.

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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.

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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.

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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.

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Does this make sense? Copyright © 2009 Kelly Mott

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HOMEWORK Teacher Worksheet: Rounding to Nearest Ten 3 Digits Worksheet Math Steps Pages: none Re-teach Page: none Copyright © 2009 Kelly Mott

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You can use the Rounding Pyramid: 5 1 2 8 4 0 9 3 7 6 1.Underlined number rounds up one 2.Add the zeros 1.Underlined number stays the same 2.Add the zeros Copyright © 2009 Kelly Mott

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