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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 712 · 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. 1.17.6 ÷ 100 =
  2. 2.48.85 × 10 =
  3. 3.130.6 × 100 =
  4. 4.22.81 ÷ 10 =
  5. 5.12.47 ÷ 10 =
  6. 6.11.71 ÷ 10 =
  7. 7.436.4 × 10 =
  8. 8.494.1 × 100 =
  9. 9.29.88 ÷ 100 =
  10. 10.0.71 ÷ 1000 =
  11. 11.465.7 × 10 =
  12. 12.32.47 × 10 =
  13. 13.467.2 × 10 =
  14. 14.32.71 × 100 =
  15. 15.31.4 × 100 =
  16. 16.32.91 × 1000 =
  17. 17.103.1 × 1000 =
  18. 18.267.2 ÷ 10 =
  19. 19.398.4 × 100 =
  20. 20.4.6 ÷ 1000 =
  21. 21.391.2 × 100 =
  22. 22.15.95 ÷ 100 =
  23. 23.0.94 ÷ 1000 =
  24. 24.19.32 × 10 =
  25. 25.13.69 × 100 =
  26. 26.232.1 × 100 =
  27. 27.313.9 ÷ 10 =
  28. 28.194.7 × 100 =
  29. 29.28.45 × 100 =
  30. 30.14.57 ÷ 10 =
  31. 31.453.1 × 10 =
  32. 32.80.3 × 100 =
  33. 33.43.51 ÷ 100 =
  34. 34.29.86 × 100 =
  35. 35.17.98 × 10 =
  36. 36.178.1 × 100 =
  37. 37.118.4 ÷ 1000 =
  38. 38.9.93 ÷ 10 =
  39. 39.23.16 × 10 =
  40. 40.268.1 × 1000 =

Answer key

  1. 0.176
  2. 488.5
  3. 13060
  4. 2.281
  5. 1.247
  6. 1.171
  7. 4364
  8. 49410
  9. 0.2988
  10. 0.00071
  11. 4657
  12. 324.7
  13. 4672
  14. 3271
  15. 3140
  16. 32910
  17. 103100
  18. 26.72
  19. 39840
  20. 0.0046
  21. 39120
  22. 0.1595
  23. 0.00094
  24. 193.2
  25. 1369
  26. 23210
  27. 31.39
  28. 19470
  29. 2845
  30. 1.457
  31. 4531
  32. 8030
  33. 0.4351
  34. 2986
  35. 179.8
  36. 17810
  37. 0.1184
  38. 0.993
  39. 231.6
  40. 268100

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