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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 558 · 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. 1.32.29 × 1000 =
  2. 2.238.3 × 1000 =
  3. 3.169.1 ÷ 100 =
  4. 4.183.7 × 10 =
  5. 5.162.4 ÷ 10 =
  6. 6.92.1 × 100 =
  7. 7.8.95 ÷ 100 =
  8. 8.42.64 ÷ 1000 =
  9. 9.0.98 × 100 =
  10. 10.0.15 × 100 =
  11. 11.13.81 × 100 =
  12. 12.408.7 × 10 =
  13. 13.423.5 ÷ 10 =
  14. 14.22.86 ÷ 100 =
  15. 15.147.4 × 100 =
  16. 16.27.56 × 10 =
  17. 17.4.75 × 10 =
  18. 18.5.35 ÷ 100 =
  19. 19.315.9 × 10 =
  20. 20.164.8 × 100 =
  21. 21.10.14 × 100 =
  22. 22.25.91 ÷ 1000 =
  23. 23.164.2 × 100 =
  24. 24.31.86 × 1000 =
  25. 25.61.6 × 1000 =
  26. 26.33.23 ÷ 10 =
  27. 27.120.1 ÷ 1000 =
  28. 28.10.32 × 10 =
  29. 29.261.4 × 1000 =
  30. 30.109.3 ÷ 1000 =
  31. 31.17.07 × 1000 =
  32. 32.474.1 × 10 =
  33. 33.13.21 × 100 =
  34. 34.32.31 ÷ 100 =
  35. 35.387.1 × 10 =
  36. 36.308.3 ÷ 100 =
  37. 37.454.3 × 10 =
  38. 38.30.26 × 10 =
  39. 39.313.8 ÷ 1000 =
  40. 40.226.1 × 1000 =

Answer key

  1. 32290
  2. 238300
  3. 1.691
  4. 1837
  5. 16.24
  6. 9210
  7. 0.0895
  8. 0.04264
  9. 98
  10. 15
  11. 1381
  12. 4087
  13. 42.35
  14. 0.2286
  15. 14740
  16. 275.6
  17. 47.5
  18. 0.0535
  19. 3159
  20. 16480
  21. 1014
  22. 0.02591
  23. 16420
  24. 31860
  25. 61600
  26. 3.323
  27. 0.1201
  28. 103.2
  29. 261400
  30. 0.1093
  31. 17070
  32. 4741
  33. 1321
  34. 0.3231
  35. 3871
  36. 3.083
  37. 4543
  38. 302.6
  39. 0.3138
  40. 226100

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