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Rounding Numbers

Rounding Numbers. Sometimes close enough is good enough!. 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. The rounding poem. Find your number

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Rounding Numbers

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  1. Rounding Numbers Sometimes close enough is good enough!

  2. 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.

  3. The rounding poem Find your number Look right next door 4 or less, just ignore 5 or more add one more!

  4. Round this number to the nearestten Find your number. 3 6 8 Circle the number in the ten place.

  5. Round this number to the nearestten . Look right next door. 3 6 8 Draw an arrow to the right of the number.

  6. Round this number to the nearestten. 4 or less, just ignore. 3 6 8 8 is larger than 4 so go to the next line of the poem.

  7. Round this number to the nearestten thousand. 5 or more, add 1 more. +1 3 6 8 Add 1 to the 6.

  8. Round this number to the nearestten. 5 or more, add 1 more. 3 70 Add 1 to the 6 and all the numbers to the right of the 7 become 0’s.

  9. The Answer 368 rounded to the nearest ten is: 3 7 0

  10. Round this number to the nearestthousand. Find your number. 3 5, 3 2 7 Circle the number in the thousands place.

  11. Round this number to the nearestthousand. Look right next door. 3 5, 3 2 7 Draw an arrow to the right of the number.

  12. Round this number to the nearestthousand. 4 or less, just ignore. 3 5, 3 2 7 Since 3 is less than 4 we do not change the 5.

  13. Round this number to the nearestthousand. 4 or less, just ignore. 3 5, 0 0 0 Change the numbers to right of 5 to 0’s.

  14. Round this number to the nearesthundred. Find your number 1,3 7 2 Circle the number in the hundred place

  15. Round this number to the nearesthundred. Look right next door. 1,3 7 2 Draw an arrow to the right of the number.

  16. Round this number to the nearesthundred. 4 or less, just ignore. 1,3 7 2 Draw an arrow to the right of the number.

  17. Round this number to the nearesthundred. 5 or more, add 1 more. +1 1, 3 7 2 Add 1 to the 3.

  18. The Answer 1,372 rounded to the nearest hundred is 1,400

  19. Round this number to the nearestthousand. Look right next door. 3,6 8 9 Draw an arrow to the right of the number.

  20. Round this number to the nearestthousand. 4 or less, just ignore. 3,6 8 9 6 is larger than 4 so go to the next line of the poem.

  21. Round this number to the nearestthousand 5 or more, add 1 more. +1 3,6 8 9 Add 1 to the 3.

  22. Round this number to the nearestthousand. Find your number. 3,689 Circle the number in the thousands place.

  23. The Answer 3,689 rounded to the nearest thousand is 3,700

  24. Let’s try these Round to hundred: Round to ten: 456 460 8784 8800 532 530 500 456 9000 98 100 9097

  25. Now It is your Turn Round to hundred: Round to ten: 425 784 32 426 258 997

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