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Math Rounding

Math Rounding. By Grade 4. Use rounding. When the question asks you to estimate. To check your answer to see if you’ve made a mistake. When an exact answer isn’t possible. When the question asks “about how many”…?. Memorize this Poem. Find your number. Look right next door.

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Math Rounding

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  1. Math Rounding By Grade 4

  2. Use rounding • When the question asks you to estimate. • To check your answer to see if you’ve made a mistake. When an exact answer isn’t possible. When the question asks “about how many”…?

  3. Memorize this Poem Find your number. Look right next door. 4 or less, change to 0’s. 5 or more, add 1 more.

  4. Round the number 5 871 to the nearestthousand. Find your number. 5 871 Circle the number in the thousands place.

  5. Round the number 5 871 to the nearestthousand. Look right next door. 5 871 Draw an arrow to the right of the number.

  6. Round the number 5 871 to the nearestthousand. 4 or less, change to 0’s. 5 871 8 is larger than 4 so go to the next line of the poem.

  7. Round the number 5 871 to the nearestthousand. 5 or more, add 1 more. 5 871 Add 1 to the 5.

  8. . Round the number 5 871 to the nearestthousand. 5 or more, add 1 more. +1 5 871 Add 1 to the 5.

  9. . Round the number 5 871 to the nearestthousand. 5 or more, add 1 more. +1 6 000 Add 1 to the 5 ( to make 6) and all the numbers to the right of the 6 become 0’s.

  10. The Answer 5871 rounded to the nearest thousand is 6 000

  11. Round the number 2 317 to the nearest thousand. Find your number. 2 317 Circle the number in the thousands place.

  12. Round the number 2 317 to the nearest thousand. Look right next door. 2 317 Draw an arrow to the right of the number.

  13. Round the number 2 317 to the nearest thousand 4 or less, change to 0’s. 2 317 Since 3 is less than 4, we ignore the 2 and change the rest to 0’s.

  14. Round the number 2 317 to the nearest thousand 4 or less, just ignore. 2 0 0 0 Change the numbers to right of 2 to 0’s.

  15. The Answer 2327 rounded to the nearest thousand is 2 000

  16. Round the number 3587 to the nearest hundred Find your number. 3 587 Circle the number where the hundreds are.

  17. Round the number 3587 to the nearest hundred Look right next door. 3 587 Draw an arrow to the right of the circled number.

  18. Round the number 3587 to the nearest hundred 4 or less, change to 0’s. 3 587 8 is greater than 4 so go to the next line of the poem.

  19. Round the number 3587 to the nearest hundred. 5 or more, add 1 more. +1 3 587 Since 8 is greater than 5, add 1 to the 5.

  20. Round the number 3587 to the nearest hundred 5 or more, add 1 more. 3 600 Change the 5 to a 6 and change all the numbers to the right to 0’s.

  21. The Answer 3 587 rounded to the nearest hundred is 3 600

  22. Round this number to the nearestten. Find your number. 4 875 Circle the number in the tens place.

  23. Round the number 4 875 to the nearest ten. Look right next door. 4 875 Draw an arrow to the right of the circled number.

  24. Round the number 4 875 to the nearest ten. 4 875 5 is than greater than 4 so go to the next line of the poem.

  25. Round the number 4 875 to the nearest ten. 5 or more, add 1 more. +1 4 875 Since 5 is equal to 5, add 1 to the 7.

  26. Round the number 4 875 to the nearest ten. 5 or more, add 1 more. 4 880 Change the 7 to a 8 and make the rest 0’s

  27. The Answer 4 875 rounded to the nearest ten is 4 880

  28. Now try some on your own: 6 218 rounded to the nearest ten is _ _ _ _

  29. Now try some on your own: 6 218 rounded to the nearest ten is 6 220

  30. Now try some on your own: 8 015 rounded to the nearest hundred is _ _ _ _

  31. Now try some on your own: 8 015 rounded to the nearest hundred is 8 000

  32. Now try some on your own: 2 495 rounded to the nearest thousand is _ _ _ _

  33. Now try some on your own: 2495 rounded to the nearest thousand is 2 000

  34. Do these on paper now:Round to the nearest 1 000 • 5789 • 3411 • 6230 • 974 • 6 899

  35. Do these on paper now:Round to the nearest 1 000 • 5789 • 3411 • 6230 • 974 • 6 899 6000 3000 6000 1 000 7 000

  36. Do these on paper now:Round to the nearest 100 • 5 789 • 3 411 • 6 230 • 974 • 6 899

  37. Do these on paper now:Round to the nearest 100 5 800 3 400 6 200 1000 6 900 • 5 789 • 3 411 • 6 230 • 974 • 6 899

  38. Do these on paper now:Round to the nearest 10 • 5 789 • 3 411 • 6 230 • 974 • 6 899

  39. Do these on paper now:Round to the nearest 10 5 790 3 410 6 230 980 6 900 • 5 789 • 3 411 • 6 230 • 974 • 6 899

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