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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 256 · 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. 1.463.1 × 100 =
  2. 2.3.72 ÷ 10 =
  3. 3.281.2 ÷ 10 =
  4. 4.47.56 × 1000 =
  5. 5.40.22 × 10 =
  6. 6.10.76 × 100 =
  7. 7.14.57 ÷ 10 =
  8. 8.7.72 ÷ 100 =
  9. 9.492.2 × 100 =
  10. 10.33.33 ÷ 100 =
  11. 11.152.1 ÷ 10 =
  12. 12.13.9 ÷ 10 =
  13. 13.311.6 × 10 =
  14. 14.43.04 × 1000 =
  15. 15.59.2 ÷ 1000 =
  16. 16.1.56 × 100 =
  17. 17.40.8 ÷ 100 =
  18. 18.46.04 × 1000 =
  19. 19.33.36 ÷ 1000 =
  20. 20.29.49 × 100 =
  21. 21.25.19 × 100 =
  22. 22.224.9 ÷ 1000 =
  23. 23.15.41 ÷ 1000 =
  24. 24.284.1 ÷ 100 =
  25. 25.11.7 × 10 =
  26. 26.141.1 × 1000 =
  27. 27.7.26 ÷ 100 =
  28. 28.39.39 × 100 =
  29. 29.13.6 ÷ 100 =
  30. 30.8.29 × 1000 =
  31. 31.33.61 × 10 =
  32. 32.32.13 × 10 =
  33. 33.331.3 × 10 =
  34. 34.57.9 ÷ 1000 =
  35. 35.472.1 × 10 =
  36. 36.150.5 ÷ 10 =
  37. 37.8.6 ÷ 100 =
  38. 38.14.6 ÷ 100 =
  39. 39.413.2 × 1000 =
  40. 40.45.91 × 1000 =

Answer key

  1. 46310
  2. 0.372
  3. 28.12
  4. 47560
  5. 402.2
  6. 1076
  7. 1.457
  8. 0.0772
  9. 49220
  10. 0.3333
  11. 15.21
  12. 1.39
  13. 3116
  14. 43040
  15. 0.0592
  16. 156
  17. 0.408
  18. 46040
  19. 0.03336
  20. 2949
  21. 2519
  22. 0.2249
  23. 0.01541
  24. 2.841
  25. 117
  26. 141100
  27. 0.0726
  28. 3939
  29. 0.136
  30. 8290
  31. 336.1
  32. 321.3
  33. 3313
  34. 0.0579
  35. 4721
  36. 15.05
  37. 0.086
  38. 0.146
  39. 413200
  40. 45910

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