Rounding quick

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Great review ppt for rounding!

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Rounding quick

  1. 1. Math Flash Rounding By Monica Yuskaitis
  2. 2. Use rounding <ul><li>When the question asks you </li></ul><ul><li>to estimate. </li></ul><ul><li>When the question asks </li></ul><ul><li>“ about how many”…? </li></ul><ul><li>When an exact answer isn’t </li></ul><ul><li>possible. </li></ul><ul><li>When an answer is difficult to obtain. </li></ul>
  3. 3. Memorize this Poem Find your number. Look right next door. 5 or more give it a shove, 4 and below, let it go.
  4. 4. Round this number to the nearest ten thousand. Find your number. 3 6 8,9 7 1 Circle the number in the ten thousands place.
  5. 5. Round this number to the nearest ten thousand. Look right next door. 3 6 8,9 7 1 Draw an arrow to the right of the number.
  6. 6. Round this number to the nearest ten thousand. 4 or less, just ignore. 3 6 8,9 7 1 8 is larger than 4 so go to the next line of the poem.
  7. 7. Round this number to the nearest ten thousand. 5 or more, add 1 more. 3 6 8,9 7 1 Add 1 to the 6. +1
  8. 8. Round this number to the nearest ten thousand. 5 or more, add 1 more. 3 7 0,0 0 0 Add 1 to the 6 and all the numbers to the right of the 7 become 0’s.
  9. 9. The Answer 368,971 rounded to the nearest ten thousand is 3 7 0,0 0 0
  10. 10. Round this number to the nearest thousand. Find your number. 3 5, 3 2 7 Circle the number in the thousands place.
  11. 11. 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.
  12. 12. 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.
  13. 13. 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.
  14. 14. The Answer 35,327 rounded to the nearest thousand is 3 5, 0 0 0
  15. 15. Round this number to the nearest dollar. Find your number. $ 5. 8 7 Circle the number where the dollars are.
  16. 16. Round this number to the nearest dollar. Look right next door. $ 5. 8 7 Draw an arrow to the right of the circled number.
  17. 17. Round this number to the nearest dollar. 4 or less, just ignore. $ 5. 8 7 8 is greater than 4 so go to the next line of the poem.
  18. 18. Round this number to the nearest dollar. 5 or more, add 1 more. $ 5. 8 7 Since 8 is greater than 5 add 1 to the 5. +1
  19. 19. Round this number to the nearest dollar. 5 or more, add 1 more. $ 6. 0 0 Change the 5 to a 6 and change all the numbers to the right to 0’s.
  20. 20. The Answer $5.87 rounded to the nearest dollar is $ 6. 0 0
  21. 21. Round this number to the nearest tenth place. Find your number. 4. 8 7 1 Circle the number in the tenths place.
  22. 22. Round this number to the nearest tenth place. Look right next door. 4. 8 7 1 Draw an arrow to the right of the circled number.
  23. 23. Round this number to the nearest tenth place. 4 or less just ignore. 4. 8 7 1 8 is greater than 4 so go to the next line of the poem.
  24. 24. Round this number to the nearest tenth place. 5 or more, add 1 more. 4. 8 7 1 Since 7 is greater than 5, add 1 to the 8. +1
  25. 25. Round this number to the nearest tenth place. 5 or more, add 1 more. 4. 9 Change the 8 to a 9 and drop the numbers to the right of the 9.
  26. 26. The Answer 4.871 rounded to the nearest tenth place is 4. 9

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