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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 782 · 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. 1.9.48 × 10 =
  2. 2.19.82 × 100 =
  3. 3.46.21 ÷ 1000 =
  4. 4.17.46 ÷ 1000 =
  5. 5.49.75 ÷ 100 =
  6. 6.209.1 ÷ 10 =
  7. 7.311.2 × 10 =
  8. 8.112.6 × 1000 =
  9. 9.36.71 × 1000 =
  10. 10.27.62 × 100 =
  11. 11.43.7 ÷ 1000 =
  12. 12.194.8 ÷ 1000 =
  13. 13.26.21 × 100 =
  14. 14.39.21 ÷ 100 =
  15. 15.44.03 ÷ 10 =
  16. 16.2.94 ÷ 100 =
  17. 17.39.09 × 10 =
  18. 18.21.12 × 1000 =
  19. 19.286.1 × 100 =
  20. 20.3.06 ÷ 1000 =
  21. 21.131.3 ÷ 1000 =
  22. 22.2.78 ÷ 10 =
  23. 23.30.96 × 100 =
  24. 24.129.3 ÷ 1000 =
  25. 25.406.4 ÷ 1000 =
  26. 26.115.6 ÷ 10 =
  27. 27.29.24 ÷ 1000 =
  28. 28.330.3 × 10 =
  29. 29.48.15 × 1000 =
  30. 30.48.44 ÷ 100 =
  31. 31.356.5 ÷ 10 =
  32. 32.7.9 ÷ 100 =
  33. 33.480.8 ÷ 10 =
  34. 34.53.5 × 1000 =
  35. 35.39.61 × 1000 =
  36. 36.389.1 ÷ 10 =
  37. 37.52.7 × 100 =
  38. 38.48.47 × 10 =
  39. 39.20.02 ÷ 10 =
  40. 40.11.8 ÷ 1000 =

Answer key

  1. 94.8
  2. 1982
  3. 0.04621
  4. 0.01746
  5. 0.4975
  6. 20.91
  7. 3112
  8. 112600
  9. 36710
  10. 2762
  11. 0.0437
  12. 0.1948
  13. 2621
  14. 0.3921
  15. 4.403
  16. 0.0294
  17. 390.9
  18. 21120
  19. 28610
  20. 0.00306
  21. 0.1313
  22. 0.278
  23. 3096
  24. 0.1293
  25. 0.4064
  26. 11.56
  27. 0.02924
  28. 3303
  29. 48150
  30. 0.4844
  31. 35.65
  32. 0.079
  33. 48.08
  34. 53500
  35. 39610
  36. 38.91
  37. 5270
  38. 484.7
  39. 2.002
  40. 0.0118

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