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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 499 · 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. 1.298.5 × 100 =
  2. 2.8.21 ÷ 100 =
  3. 3.441.6 ÷ 1000 =
  4. 4.300.8 ÷ 100 =
  5. 5.35.87 ÷ 1000 =
  6. 6.10.56 ÷ 1000 =
  7. 7.25.96 ÷ 100 =
  8. 8.2.02 × 100 =
  9. 9.32.31 ÷ 1000 =
  10. 10.8.7 ÷ 10 =
  11. 11.9.17 × 10 =
  12. 12.2.81 ÷ 10 =
  13. 13.12.87 × 100 =
  14. 14.15.01 × 1000 =
  15. 15.41.29 ÷ 100 =
  16. 16.24.37 × 100 =
  17. 17.5.15 × 1000 =
  18. 18.7.43 ÷ 100 =
  19. 19.284.2 × 10 =
  20. 20.6.47 ÷ 1000 =
  21. 21.468.7 × 1000 =
  22. 22.29.55 ÷ 100 =
  23. 23.61.1 ÷ 100 =
  24. 24.310.7 × 100 =
  25. 25.350.7 × 10 =
  26. 26.465.8 ÷ 100 =
  27. 27.26.95 ÷ 10 =
  28. 28.42.74 ÷ 1000 =
  29. 29.31.11 ÷ 10 =
  30. 30.235.1 × 100 =
  31. 31.132.1 × 10 =
  32. 32.14.92 ÷ 10 =
  33. 33.319.7 ÷ 100 =
  34. 34.10.05 × 1000 =
  35. 35.16.19 ÷ 100 =
  36. 36.42.71 ÷ 10 =
  37. 37.126.9 × 10 =
  38. 38.10.09 × 10 =
  39. 39.417.9 ÷ 100 =
  40. 40.8.47 × 10 =

Answer key

  1. 29850
  2. 0.0821
  3. 0.4416
  4. 3.008
  5. 0.03587
  6. 0.01056
  7. 0.2596
  8. 202
  9. 0.03231
  10. 0.87
  11. 91.7
  12. 0.281
  13. 1287
  14. 15010
  15. 0.4129
  16. 2437
  17. 5150
  18. 0.0743
  19. 2842
  20. 0.00647
  21. 468700
  22. 0.2955
  23. 0.611
  24. 31070
  25. 3507
  26. 4.658
  27. 2.695
  28. 0.04274
  29. 3.111
  30. 23510
  31. 1321
  32. 1.492
  33. 3.197
  34. 10050
  35. 0.1619
  36. 4.271
  37. 1269
  38. 100.9
  39. 4.179
  40. 84.7

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