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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 752 · 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. 1.29.61 ÷ 100 =
  2. 2.85.7 × 100 =
  3. 3.42.83 × 100 =
  4. 4.3.96 ÷ 1000 =
  5. 5.29.35 × 10 =
  6. 6.105.7 ÷ 1000 =
  7. 7.21.82 ÷ 10 =
  8. 8.31.23 × 10 =
  9. 9.301.2 ÷ 1000 =
  10. 10.32.13 × 100 =
  11. 11.436.8 × 1000 =
  12. 12.16.39 ÷ 100 =
  13. 13.169.1 × 10 =
  14. 14.443.5 × 10 =
  15. 15.294.3 × 100 =
  16. 16.186.9 × 1000 =
  17. 17.123.9 × 1000 =
  18. 18.404.2 × 10 =
  19. 19.28.18 ÷ 1000 =
  20. 20.48.73 ÷ 100 =
  21. 21.487.6 × 10 =
  22. 22.45.93 × 100 =
  23. 23.187.5 ÷ 100 =
  24. 24.125.4 ÷ 10 =
  25. 25.344.7 × 100 =
  26. 26.2.35 ÷ 1000 =
  27. 27.40.33 ÷ 100 =
  28. 28.466.1 × 10 =
  29. 29.27.26 × 10 =
  30. 30.15.02 × 10 =
  31. 31.14.64 × 10 =
  32. 32.53.8 × 10 =
  33. 33.9.48 × 1000 =
  34. 34.110.5 ÷ 10 =
  35. 35.86.3 × 100 =
  36. 36.20.52 × 10 =
  37. 37.196.3 ÷ 1000 =
  38. 38.3.88 ÷ 100 =
  39. 39.22.47 × 100 =
  40. 40.38.13 × 10 =

Answer key

  1. 0.2961
  2. 8570
  3. 4283
  4. 0.00396
  5. 293.5
  6. 0.1057
  7. 2.182
  8. 312.3
  9. 0.3012
  10. 3213
  11. 436800
  12. 0.1639
  13. 1691
  14. 4435
  15. 29430
  16. 186900
  17. 123900
  18. 4042
  19. 0.02818
  20. 0.4873
  21. 4876
  22. 4593
  23. 1.875
  24. 12.54
  25. 34470
  26. 0.00235
  27. 0.4033
  28. 4661
  29. 272.6
  30. 150.2
  31. 146.4
  32. 538
  33. 9480
  34. 11.05
  35. 8630
  36. 205.2
  37. 0.1963
  38. 0.0388
  39. 2247
  40. 381.3

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