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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 48 · 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. 1.345.9 × 1000 =
  2. 2.116.5 × 1000 =
  3. 3.4.3 ÷ 100 =
  4. 4.278.1 ÷ 1000 =
  5. 5.19.4 ÷ 100 =
  6. 6.489.5 ÷ 1000 =
  7. 7.169.1 ÷ 10 =
  8. 8.428.6 ÷ 1000 =
  9. 9.259.1 × 1000 =
  10. 10.294.9 × 10 =
  11. 11.52.9 ÷ 10 =
  12. 12.17.75 × 1000 =
  13. 13.12.15 × 10 =
  14. 14.107.8 × 1000 =
  15. 15.29.25 ÷ 1000 =
  16. 16.3.84 × 100 =
  17. 17.3.75 ÷ 100 =
  18. 18.436.8 × 1000 =
  19. 19.17.13 × 100 =
  20. 20.27.95 ÷ 1000 =
  21. 21.1.99 ÷ 10 =
  22. 22.275.7 ÷ 1000 =
  23. 23.2.72 × 10 =
  24. 24.21.23 × 10 =
  25. 25.21.93 × 10 =
  26. 26.403.6 ÷ 10 =
  27. 27.77.3 × 1000 =
  28. 28.18.28 ÷ 1000 =
  29. 29.186.1 × 10 =
  30. 30.4.08 × 1000 =
  31. 31.422.2 × 100 =
  32. 32.6.52 ÷ 10 =
  33. 33.8.02 × 1000 =
  34. 34.138.6 × 10 =
  35. 35.481.4 ÷ 100 =
  36. 36.342.7 ÷ 100 =
  37. 37.497.4 × 10 =
  38. 38.129.5 × 10 =
  39. 39.5.56 ÷ 10 =
  40. 40.357.2 ÷ 10 =

Answer key

  1. 345900
  2. 116500
  3. 0.043
  4. 0.2781
  5. 0.194
  6. 0.4895
  7. 16.91
  8. 0.4286
  9. 259100
  10. 2949
  11. 5.29
  12. 17750
  13. 121.5
  14. 107800
  15. 0.02925
  16. 384
  17. 0.0375
  18. 436800
  19. 1713
  20. 0.02795
  21. 0.199
  22. 0.2757
  23. 27.2
  24. 212.3
  25. 219.3
  26. 40.36
  27. 77300
  28. 0.01828
  29. 1861
  30. 4080
  31. 42220
  32. 0.652
  33. 8020
  34. 1386
  35. 4.814
  36. 3.427
  37. 4974
  38. 1295
  39. 0.556
  40. 35.72

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