3rd Grade Rounding By Monica Yuskaitis

California Standard Addressed Number Sense Third Grade 1.4 Round off numbers to 10,000 to the nearest ten, hundred, and thousand. Copyright © 2000 by Monica Yuskaitis

Copyright © 2000 by Monica Yuskaitis Objectives To be able to round numbers to the nearest ten To be able to round numbers to the nearest hundred To be able to round numbers to the nearest thousand Copyright © 2000 by Monica Yuskaitis

Copyright © 2000 by Monica Yuskaitis Vocabulary Round – to replace an exact number by another that is close to it in value and easier to use. For example, 52, rounded to the nearest ten is 50. Copyright © 2000 by Monica Yuskaitis

Copyright © 2000 by Monica Yuskaitis Use rounding When the question asks you to estimate. When the question asks “about how many”…? When an exact answer isn’t possible. When an answer is difficult to obtain. Copyright © 2000 by Monica Yuskaitis

Copyright © 2000 by Monica Yuskaitis Memorize this Poem Find your number. Look right next door. 4 or less just ignore. 5 or more, add 1 more. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest ten. Find your number. 4 7 Circle the number in the tens place. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest ten. Look right next door. 4 7 Draw an arrow to the right of the number. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest ten. 4 or less, just ignore. 4 7 7 is larger than 4 so go to the next line of the poem. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest ten. 5 or more, add 1 more. +1 4 7 Add 1 to the 4. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest ten. 5 or more, add 1 more. 5 0 After adding 1 to the 4, all the numbers to the right of the 5 become 0’s. Copyright © 2000 by Monica Yuskaitis

4 7 rounded to the nearest tens place is The Answer 4 7 rounded to the nearest tens place is 5 0 47 50 40 Note 47 is closer to 50 on the number line. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest hundred. Find your number. 9 8 6 Circle the number in the hundreds place. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest hundred. Look right next door. 9 8 6 Draw an arrow to the right of the number. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest hundred. 4 or less, just ignore. 9 8 6 8 is larger than 4 so go to the next line of the poem. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest hundred. 5 or more, add 1 more. +1 9 8 6 Add 1 to the 9. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest hundred. 5 or more, add 1 more. 1, 0 0 0 After adding 1 to the 9, all the numbers to the right of the 10 become 0’s. Copyright © 2000 by Monica Yuskaitis

986 rounded to the nearest hundreds place is The Answer 986 rounded to the nearest hundreds place is 1, 0 0 0 900 986 1,000 Note 986 is closer to 1,000 on the number line. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest thousand. Find your number. 3 5, 3 2 7 Circle the number in the thousands place. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest thousand. Look right next door. 3 5, 3 2 7 Draw an arrow to the right of the number. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest thousand. 4 or less, just ignore. 3 5, 3 2 7 Since 3 is less than 4 we do not change the 5. Copyright © 2000 by Monica Yuskaitis

Round this number to the nearest thousand. 4 or less, just ignore. 3 5, 0 0 0 Change the numbers to left of 5 to 0’s. Copyright © 2000 by Monica Yuskaitis

3 5, 0 0 0 35,327 rounded to the nearest thousand is The Answer 35,000 36,000 Note 35,327 is closer to 35,000 on the number line than to 36,000. Copyright © 2000 by Monica Yuskaitis

Round these numbers to the nearest ten. 1 3 9 4 5 2 8 2 9 7 1 4 0 5 0 2 8 0 1 0 0 Copyright © 2000 by Monica Yuskaitis

Round these numbers to the nearest hundred. 2, 1 3 9 1 9, 7 4 5 2 8 2 3, 1 9 7 2, 1 0 0 1 9, 7 0 0 3 0 0 3, 2 0 0 Copyright © 2000 by Monica Yuskaitis

Round these numbers to the nearest thousand. 2, 8 3 9 1 9, 4 4 5 8, 9 8 2 4 3,1 9 7 3, 0 0 0 1 9, 0 0 0 9, 0 0 0 4 3, 0 0 0 Copyright © 2000 by Monica Yuskaitis

Copyright © 2000 by Monica Yuskaitis Credits Illustrations from: Clipart from ClickArt 125,000 Deluxe Image Pak, T/Maker Co., Broderbund Software, Inc. Copyright © 2000 by Monica Yuskaitis