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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 35 · 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. 1.230.9 ÷ 10 =
  2. 2.256.4 × 10 =
  3. 3.33.91 × 1000 =
  4. 4.3.23 ÷ 1000 =
  5. 5.403.2 ÷ 10 =
  6. 6.30.59 ÷ 10 =
  7. 7.258.9 × 1000 =
  8. 8.45.96 × 100 =
  9. 9.277.3 × 1000 =
  10. 10.444.8 × 100 =
  11. 11.128.5 × 10 =
  12. 12.79.6 ÷ 100 =
  13. 13.215.3 ÷ 10 =
  14. 14.421.6 × 10 =
  15. 15.10.61 ÷ 100 =
  16. 16.47.67 ÷ 1000 =
  17. 17.408.6 ÷ 1000 =
  18. 18.116.1 ÷ 1000 =
  19. 19.232.1 × 10 =
  20. 20.172.7 × 100 =
  21. 21.36.24 ÷ 1000 =
  22. 22.12.2 ÷ 100 =
  23. 23.472.9 × 100 =
  24. 24.19.05 × 10 =
  25. 25.257.5 ÷ 10 =
  26. 26.30.28 × 1000 =
  27. 27.85.6 × 100 =
  28. 28.183.8 × 10 =
  29. 29.304.2 ÷ 1000 =
  30. 30.24.86 × 10 =
  31. 31.89.1 × 1000 =
  32. 32.47.58 × 100 =
  33. 33.330.3 ÷ 100 =
  34. 34.165.9 ÷ 100 =
  35. 35.48.17 ÷ 100 =
  36. 36.41.07 × 10 =
  37. 37.49.31 ÷ 100 =
  38. 38.238.9 × 10 =
  39. 39.2.91 × 100 =
  40. 40.12.81 ÷ 100 =

Answer key

  1. 23.09
  2. 2564
  3. 33910
  4. 0.00323
  5. 40.32
  6. 3.059
  7. 258900
  8. 4596
  9. 277300
  10. 44480
  11. 1285
  12. 0.796
  13. 21.53
  14. 4216
  15. 0.1061
  16. 0.04767
  17. 0.4086
  18. 0.1161
  19. 2321
  20. 17270
  21. 0.03624
  22. 0.122
  23. 47290
  24. 190.5
  25. 25.75
  26. 30280
  27. 8560
  28. 1838
  29. 0.3042
  30. 248.6
  31. 89100
  32. 4758
  33. 3.303
  34. 1.659
  35. 0.4817
  36. 410.7
  37. 0.4931
  38. 2389
  39. 291
  40. 0.1281

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