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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 3 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.316.1 ÷ 100 =
  2. 2.181.1 × 100 =
  3. 3.47.21 × 1000 =
  4. 4.263.1 × 10 =
  5. 5.26.82 ÷ 1000 =
  6. 6.23.04 ÷ 10 =
  7. 7.22.03 ÷ 10 =
  8. 8.115.4 ÷ 1000 =
  9. 9.5.75 × 1000 =
  10. 10.22.56 × 1000 =
  11. 11.48.61 ÷ 1000 =
  12. 12.276.2 × 1000 =
  13. 13.244.2 × 10 =
  14. 14.9.63 × 10 =
  15. 15.27.19 × 1000 =
  16. 16.12.31 × 10 =
  17. 17.23.28 ÷ 100 =
  18. 18.17.76 × 1000 =
  19. 19.295.2 ÷ 100 =
  20. 20.46.9 × 100 =
  21. 21.368.5 × 10 =
  22. 22.8.79 ÷ 100 =
  23. 23.312.2 × 1000 =
  24. 24.30.25 × 10 =
  25. 25.16.36 × 100 =
  26. 26.45.9 × 100 =
  27. 27.34.3 × 10 =
  28. 28.416.4 ÷ 10 =
  29. 29.15.22 ÷ 100 =
  30. 30.15.35 × 100 =
  31. 31.274.1 × 100 =
  32. 32.45.87 × 100 =
  33. 33.475.9 × 1000 =
  34. 34.42.1 ÷ 10 =
  35. 35.45.51 ÷ 10 =
  36. 36.46.31 ÷ 1000 =
  37. 37.210.3 ÷ 10 =
  38. 38.387.9 × 100 =
  39. 39.36.8 × 1000 =
  40. 40.61.1 × 1000 =

Answer key

  1. 3.161
  2. 18110
  3. 47210
  4. 2631
  5. 0.02682
  6. 2.304
  7. 2.203
  8. 0.1154
  9. 5750
  10. 22560
  11. 0.04861
  12. 276200
  13. 2442
  14. 96.3
  15. 27190
  16. 123.1
  17. 0.2328
  18. 17760
  19. 2.952
  20. 4690
  21. 3685
  22. 0.0879
  23. 312200
  24. 302.5
  25. 1636
  26. 4590
  27. 343
  28. 41.64
  29. 0.1522
  30. 1535
  31. 27410
  32. 4587
  33. 475900
  34. 4.21
  35. 4.551
  36. 0.04631
  37. 21.03
  38. 38790
  39. 36800
  40. 61100

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