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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 807 · 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. 1.18.41 × 10 =
  2. 2.157.1 ÷ 10 =
  3. 3.221.5 ÷ 100 =
  4. 4.13.1 × 10 =
  5. 5.46.94 × 10 =
  6. 6.74.5 ÷ 10 =
  7. 7.33.18 ÷ 100 =
  8. 8.25.43 × 100 =
  9. 9.186.1 × 10 =
  10. 10.227.6 × 100 =
  11. 11.6.72 ÷ 100 =
  12. 12.42.05 ÷ 1000 =
  13. 13.209.5 ÷ 100 =
  14. 14.37.71 ÷ 1000 =
  15. 15.48.85 × 1000 =
  16. 16.337.4 × 100 =
  17. 17.367.9 × 100 =
  18. 18.193.2 × 1000 =
  19. 19.11.42 ÷ 1000 =
  20. 20.39.2 × 10 =
  21. 21.16.61 × 100 =
  22. 22.352.7 × 100 =
  23. 23.140.8 × 10 =
  24. 24.4.02 ÷ 10 =
  25. 25.31.3 ÷ 100 =
  26. 26.244.6 × 100 =
  27. 27.363.1 × 100 =
  28. 28.368.8 ÷ 10 =
  29. 29.22.51 ÷ 10 =
  30. 30.65.5 × 1000 =
  31. 31.23.4 ÷ 100 =
  32. 32.36.89 × 1000 =
  33. 33.23.22 ÷ 1000 =
  34. 34.48.95 ÷ 10 =
  35. 35.37.08 ÷ 10 =
  36. 36.12.43 × 100 =
  37. 37.26.47 ÷ 10 =
  38. 38.92.1 ÷ 100 =
  39. 39.401.7 ÷ 1000 =
  40. 40.175.1 × 1000 =

Answer key

  1. 184.1
  2. 15.71
  3. 2.215
  4. 131
  5. 469.4
  6. 7.45
  7. 0.3318
  8. 2543
  9. 1861
  10. 22760
  11. 0.0672
  12. 0.04205
  13. 2.095
  14. 0.03771
  15. 48850
  16. 33740
  17. 36790
  18. 193200
  19. 0.01142
  20. 392
  21. 1661
  22. 35270
  23. 1408
  24. 0.402
  25. 0.313
  26. 24460
  27. 36310
  28. 36.88
  29. 2.251
  30. 65500
  31. 0.234
  32. 36890
  33. 0.02322
  34. 4.895
  35. 3.708
  36. 1243
  37. 2.647
  38. 0.921
  39. 0.4017
  40. 175100

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