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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 20 · 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. 1.29.67 × 10 =
  2. 2.14.5 ÷ 1000 =
  3. 3.9.99 × 100 =
  4. 4.234.9 × 100 =
  5. 5.21.96 × 100 =
  6. 6.167.9 × 100 =
  7. 7.247.1 ÷ 10 =
  8. 8.430.1 ÷ 100 =
  9. 9.33.99 × 10 =
  10. 10.332.7 ÷ 100 =
  11. 11.355.1 ÷ 10 =
  12. 12.48.95 × 1000 =
  13. 13.53.4 × 10 =
  14. 14.47.43 × 1000 =
  15. 15.42.5 ÷ 1000 =
  16. 16.14.73 × 100 =
  17. 17.12.01 ÷ 100 =
  18. 18.15.57 ÷ 1000 =
  19. 19.205.8 × 1000 =
  20. 20.303.4 × 1000 =
  21. 21.381.2 × 1000 =
  22. 22.384.1 ÷ 100 =
  23. 23.392.3 × 10 =
  24. 24.101.5 ÷ 100 =
  25. 25.360.8 ÷ 100 =
  26. 26.23.85 ÷ 100 =
  27. 27.296.2 × 10 =
  28. 28.442.9 × 10 =
  29. 29.6.84 ÷ 100 =
  30. 30.37.13 × 10 =
  31. 31.286.5 ÷ 1000 =
  32. 32.117.7 ÷ 10 =
  33. 33.1.2 × 10 =
  34. 34.38.91 ÷ 10 =
  35. 35.192.1 × 10 =
  36. 36.21.69 ÷ 10 =
  37. 37.225.5 ÷ 1000 =
  38. 38.272.2 ÷ 1000 =
  39. 39.18.01 ÷ 10 =
  40. 40.461.6 × 10 =

Answer key

  1. 296.7
  2. 0.0145
  3. 999
  4. 23490
  5. 2196
  6. 16790
  7. 24.71
  8. 4.301
  9. 339.9
  10. 3.327
  11. 35.51
  12. 48950
  13. 534
  14. 47430
  15. 0.0425
  16. 1473
  17. 0.1201
  18. 0.01557
  19. 205800
  20. 303400
  21. 381200
  22. 3.841
  23. 3923
  24. 1.015
  25. 3.608
  26. 0.2385
  27. 2962
  28. 4429
  29. 0.0684
  30. 371.3
  31. 0.2865
  32. 11.77
  33. 12
  34. 3.891
  35. 1921
  36. 2.169
  37. 0.2255
  38. 0.2722
  39. 1.801
  40. 4616

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