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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 240 · 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. 1.328.6 × 10 =
  2. 2.449.1 ÷ 10 =
  3. 3.27.36 × 1000 =
  4. 4.160.3 ÷ 1000 =
  5. 5.400.5 ÷ 10 =
  6. 6.253.1 × 100 =
  7. 7.41.53 × 100 =
  8. 8.418.1 × 10 =
  9. 9.13.87 ÷ 100 =
  10. 10.113.4 ÷ 10 =
  11. 11.59.1 × 1000 =
  12. 12.8.64 ÷ 10 =
  13. 13.418.5 × 10 =
  14. 14.254.3 ÷ 100 =
  15. 15.10.25 × 1000 =
  16. 16.54.6 × 10 =
  17. 17.356.9 ÷ 10 =
  18. 18.38.33 × 1000 =
  19. 19.53.2 × 10 =
  20. 20.236.8 ÷ 10 =
  21. 21.8.61 × 10 =
  22. 22.22.18 ÷ 1000 =
  23. 23.118.7 ÷ 10 =
  24. 24.31.7 ÷ 1000 =
  25. 25.306.4 ÷ 100 =
  26. 26.12.09 ÷ 10 =
  27. 27.298.2 ÷ 1000 =
  28. 28.478.7 ÷ 10 =
  29. 29.126.2 × 1000 =
  30. 30.19.11 ÷ 10 =
  31. 31.10.93 × 1000 =
  32. 32.370.5 ÷ 100 =
  33. 33.183.3 × 100 =
  34. 34.450.3 × 10 =
  35. 35.38.48 ÷ 100 =
  36. 36.417.5 × 100 =
  37. 37.260.5 ÷ 1000 =
  38. 38.46.1 × 1000 =
  39. 39.2.87 × 100 =
  40. 40.23.01 ÷ 100 =

Answer key

  1. 3286
  2. 44.91
  3. 27360
  4. 0.1603
  5. 40.05
  6. 25310
  7. 4153
  8. 4181
  9. 0.1387
  10. 11.34
  11. 59100
  12. 0.864
  13. 4185
  14. 2.543
  15. 10250
  16. 546
  17. 35.69
  18. 38330
  19. 532
  20. 23.68
  21. 86.1
  22. 0.02218
  23. 11.87
  24. 0.0317
  25. 3.064
  26. 1.209
  27. 0.2982
  28. 47.87
  29. 126200
  30. 1.911
  31. 10930
  32. 3.705
  33. 18330
  34. 4503
  35. 0.3848
  36. 41750
  37. 0.2605
  38. 46100
  39. 287
  40. 0.2301

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