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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 615 · 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. 1.104.6 × 10 =
  2. 2.254.5 ÷ 10 =
  3. 3.4.02 ÷ 10 =
  4. 4.5.82 × 10 =
  5. 5.48.1 ÷ 100 =
  6. 6.419.5 × 1000 =
  7. 7.2.18 ÷ 1000 =
  8. 8.27.22 × 100 =
  9. 9.2.65 × 10 =
  10. 10.437.9 ÷ 100 =
  11. 11.126.6 ÷ 100 =
  12. 12.42.76 × 10 =
  13. 13.7.29 × 1000 =
  14. 14.207.4 ÷ 10 =
  15. 15.39.71 ÷ 1000 =
  16. 16.273.8 × 10 =
  17. 17.491.2 × 1000 =
  18. 18.3.15 × 10 =
  19. 19.25.95 ÷ 100 =
  20. 20.70.8 ÷ 10 =
  21. 21.10.8 × 100 =
  22. 22.13.15 × 1000 =
  23. 23.349.1 ÷ 1000 =
  24. 24.355.2 ÷ 10 =
  25. 25.457.2 ÷ 10 =
  26. 26.116.1 ÷ 100 =
  27. 27.32.49 × 10 =
  28. 28.377.4 × 1000 =
  29. 29.22.17 × 1000 =
  30. 30.18.5 ÷ 1000 =
  31. 31.22.31 × 1000 =
  32. 32.46.38 ÷ 1000 =
  33. 33.3.07 × 100 =
  34. 34.32.61 × 10 =
  35. 35.40.11 ÷ 1000 =
  36. 36.5.65 ÷ 1000 =
  37. 37.15.51 × 10 =
  38. 38.238.3 ÷ 100 =
  39. 39.15.4 ÷ 100 =
  40. 40.463.1 × 10 =

Answer key

  1. 1046
  2. 25.45
  3. 0.402
  4. 58.2
  5. 0.481
  6. 419500
  7. 0.00218
  8. 2722
  9. 26.5
  10. 4.379
  11. 1.266
  12. 427.6
  13. 7290
  14. 20.74
  15. 0.03971
  16. 2738
  17. 491200
  18. 31.5
  19. 0.2595
  20. 7.08
  21. 1080
  22. 13150
  23. 0.3491
  24. 35.52
  25. 45.72
  26. 1.161
  27. 324.9
  28. 377400
  29. 22170
  30. 0.0185
  31. 22310
  32. 0.04638
  33. 307
  34. 326.1
  35. 0.04011
  36. 0.00565
  37. 155.1
  38. 2.383
  39. 0.154
  40. 4631

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