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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 970 · 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. 1.146.1 ÷ 1000 =
  2. 2.45.6 ÷ 10 =
  3. 3.28.12 ÷ 100 =
  4. 4.48.92 × 1000 =
  5. 5.2.46 × 1000 =
  6. 6.133.7 ÷ 10 =
  7. 7.39.59 × 10 =
  8. 8.21.51 × 100 =
  9. 9.7.11 ÷ 100 =
  10. 10.290.6 × 100 =
  11. 11.17.68 ÷ 1000 =
  12. 12.42.3 × 1000 =
  13. 13.12.79 ÷ 1000 =
  14. 14.22.05 × 10 =
  15. 15.91.9 ÷ 1000 =
  16. 16.8.89 ÷ 10 =
  17. 17.408.2 ÷ 1000 =
  18. 18.30.66 ÷ 100 =
  19. 19.235.5 × 100 =
  20. 20.342.1 ÷ 100 =
  21. 21.488.8 × 100 =
  22. 22.447.6 × 10 =
  23. 23.38.22 ÷ 100 =
  24. 24.123.7 ÷ 100 =
  25. 25.9.35 × 1000 =
  26. 26.40.61 × 1000 =
  27. 27.38.88 × 100 =
  28. 28.416.5 × 1000 =
  29. 29.41.78 × 1000 =
  30. 30.70.8 × 10 =
  31. 31.39.54 × 10 =
  32. 32.210.6 ÷ 10 =
  33. 33.39.11 × 10 =
  34. 34.14.08 × 10 =
  35. 35.11.52 ÷ 10 =
  36. 36.157.7 ÷ 1000 =
  37. 37.43.58 ÷ 10 =
  38. 38.73.1 × 1000 =
  39. 39.45.21 × 100 =
  40. 40.347.1 ÷ 1000 =

Answer key

  1. 0.1461
  2. 4.56
  3. 0.2812
  4. 48920
  5. 2460
  6. 13.37
  7. 395.9
  8. 2151
  9. 0.0711
  10. 29060
  11. 0.01768
  12. 42300
  13. 0.01279
  14. 220.5
  15. 0.0919
  16. 0.889
  17. 0.4082
  18. 0.3066
  19. 23550
  20. 3.421
  21. 48880
  22. 4476
  23. 0.3822
  24. 1.237
  25. 9350
  26. 40610
  27. 3888
  28. 416500
  29. 41780
  30. 708
  31. 395.4
  32. 21.06
  33. 391.1
  34. 140.8
  35. 1.152
  36. 0.1577
  37. 4.358
  38. 73100
  39. 4521
  40. 0.3471

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