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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 282 · 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. 1.24.64 ÷ 10 =
  2. 2.346.7 ÷ 1000 =
  3. 3.428.3 × 10 =
  4. 4.13.62 ÷ 1000 =
  5. 5.8.19 × 100 =
  6. 6.206.2 × 100 =
  7. 7.12.42 × 1000 =
  8. 8.362.7 ÷ 10 =
  9. 9.36.76 ÷ 100 =
  10. 10.0.37 × 10 =
  11. 11.5.92 ÷ 10 =
  12. 12.34.11 ÷ 1000 =
  13. 13.22.5 × 10 =
  14. 14.45.42 ÷ 1000 =
  15. 15.44.05 ÷ 10 =
  16. 16.44.11 ÷ 1000 =
  17. 17.145.6 × 100 =
  18. 18.471.8 × 10 =
  19. 19.302.8 ÷ 100 =
  20. 20.31.67 × 1000 =
  21. 21.390.4 × 10 =
  22. 22.142.4 ÷ 1000 =
  23. 23.425.9 × 1000 =
  24. 24.13.08 ÷ 10 =
  25. 25.70.3 × 10 =
  26. 26.29.48 ÷ 1000 =
  27. 27.48.96 × 10 =
  28. 28.6.24 × 1000 =
  29. 29.32.87 × 100 =
  30. 30.6.57 × 10 =
  31. 31.302.1 ÷ 10 =
  32. 32.38.38 ÷ 1000 =
  33. 33.18.37 ÷ 1000 =
  34. 34.387.8 ÷ 1000 =
  35. 35.172.1 × 10 =
  36. 36.39.55 × 10 =
  37. 37.28.22 × 1000 =
  38. 38.476.2 × 100 =
  39. 39.15.95 ÷ 10 =
  40. 40.56.9 × 1000 =

Answer key

  1. 2.464
  2. 0.3467
  3. 4283
  4. 0.01362
  5. 819
  6. 20620
  7. 12420
  8. 36.27
  9. 0.3676
  10. 3.7
  11. 0.592
  12. 0.03411
  13. 225
  14. 0.04542
  15. 4.405
  16. 0.04411
  17. 14560
  18. 4718
  19. 3.028
  20. 31670
  21. 3904
  22. 0.1424
  23. 425900
  24. 1.308
  25. 703
  26. 0.02948
  27. 489.6
  28. 6240
  29. 3287
  30. 65.7
  31. 30.21
  32. 0.03838
  33. 0.01837
  34. 0.3878
  35. 1721
  36. 395.5
  37. 28220
  38. 47620
  39. 1.595
  40. 56900

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