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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 746 · 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. 1.38.53 × 10 =
  2. 2.17.73 × 10 =
  3. 3.25.88 ÷ 10 =
  4. 4.281.7 × 100 =
  5. 5.275.5 × 10 =
  6. 6.145.2 ÷ 10 =
  7. 7.1.76 × 1000 =
  8. 8.15.12 ÷ 100 =
  9. 9.59.6 × 10 =
  10. 10.138.1 ÷ 100 =
  11. 11.52.6 × 10 =
  12. 12.13.12 ÷ 10 =
  13. 13.37.43 × 100 =
  14. 14.192.3 × 1000 =
  15. 15.270.5 ÷ 100 =
  16. 16.11.75 ÷ 10 =
  17. 17.6.27 ÷ 100 =
  18. 18.102.4 ÷ 100 =
  19. 19.218.1 ÷ 1000 =
  20. 20.13.36 × 100 =
  21. 21.15.08 × 10 =
  22. 22.25.52 ÷ 100 =
  23. 23.44.56 × 1000 =
  24. 24.179.9 × 100 =
  25. 25.91.9 × 100 =
  26. 26.21.63 ÷ 100 =
  27. 27.113.3 × 1000 =
  28. 28.237.3 ÷ 100 =
  29. 29.6.66 ÷ 100 =
  30. 30.132.6 ÷ 100 =
  31. 31.489.2 ÷ 100 =
  32. 32.122.1 × 10 =
  33. 33.20.69 ÷ 1000 =
  34. 34.52.9 ÷ 1000 =
  35. 35.45.98 ÷ 100 =
  36. 36.11.02 ÷ 1000 =
  37. 37.239.9 × 100 =
  38. 38.12.7 × 10 =
  39. 39.1.32 ÷ 1000 =
  40. 40.37.89 × 100 =

Answer key

  1. 385.3
  2. 177.3
  3. 2.588
  4. 28170
  5. 2755
  6. 14.52
  7. 1760
  8. 0.1512
  9. 596
  10. 1.381
  11. 526
  12. 1.312
  13. 3743
  14. 192300
  15. 2.705
  16. 1.175
  17. 0.0627
  18. 1.024
  19. 0.2181
  20. 1336
  21. 150.8
  22. 0.2552
  23. 44560
  24. 17990
  25. 9190
  26. 0.2163
  27. 113300
  28. 2.373
  29. 0.0666
  30. 1.326
  31. 4.892
  32. 1221
  33. 0.02069
  34. 0.0529
  35. 0.4598
  36. 0.01102
  37. 23990
  38. 127
  39. 0.00132
  40. 3789

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