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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 506 · 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. 1.351.5 ÷ 1000 =
  2. 2.12.41 ÷ 1000 =
  3. 3.319.8 × 100 =
  4. 4.19.35 × 10 =
  5. 5.457.1 ÷ 100 =
  6. 6.356.2 × 100 =
  7. 7.11.91 ÷ 10 =
  8. 8.3.96 ÷ 10 =
  9. 9.15.9 ÷ 100 =
  10. 10.17.69 ÷ 100 =
  11. 11.222.2 × 100 =
  12. 12.113.7 × 100 =
  13. 13.455.2 × 10 =
  14. 14.83.8 × 100 =
  15. 15.119.7 ÷ 100 =
  16. 16.200.3 ÷ 1000 =
  17. 17.13.07 × 10 =
  18. 18.3.02 ÷ 1000 =
  19. 19.457.1 ÷ 10 =
  20. 20.141.8 ÷ 10 =
  21. 21.401.1 ÷ 100 =
  22. 22.31.13 ÷ 1000 =
  23. 23.405.4 × 100 =
  24. 24.342.5 ÷ 10 =
  25. 25.383.8 ÷ 1000 =
  26. 26.9.06 ÷ 100 =
  27. 27.249.9 × 100 =
  28. 28.24.53 × 10 =
  29. 29.304.1 × 10 =
  30. 30.284.4 × 10 =
  31. 31.18.91 × 1000 =
  32. 32.6.16 × 100 =
  33. 33.33.32 × 1000 =
  34. 34.345.3 ÷ 10 =
  35. 35.22.95 × 1000 =
  36. 36.12.09 ÷ 10 =
  37. 37.44.79 ÷ 10 =
  38. 38.13.61 ÷ 1000 =
  39. 39.332.8 × 10 =
  40. 40.45.78 ÷ 100 =

Answer key

  1. 0.3515
  2. 0.01241
  3. 31980
  4. 193.5
  5. 4.571
  6. 35620
  7. 1.191
  8. 0.396
  9. 0.159
  10. 0.1769
  11. 22220
  12. 11370
  13. 4552
  14. 8380
  15. 1.197
  16. 0.2003
  17. 130.7
  18. 0.00302
  19. 45.71
  20. 14.18
  21. 4.011
  22. 0.03113
  23. 40540
  24. 34.25
  25. 0.3838
  26. 0.0906
  27. 24990
  28. 245.3
  29. 3041
  30. 2844
  31. 18910
  32. 616
  33. 33320
  34. 34.53
  35. 22950
  36. 1.209
  37. 4.479
  38. 0.01361
  39. 3328
  40. 0.4578

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