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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 248 · 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. 1.74.7 × 1000 =
  2. 2.388.8 × 10 =
  3. 3.350.5 ÷ 100 =
  4. 4.342.5 × 100 =
  5. 5.29.85 × 1000 =
  6. 6.19.85 ÷ 100 =
  7. 7.31.66 × 10 =
  8. 8.131.9 × 1000 =
  9. 9.235.1 × 10 =
  10. 10.345.6 × 1000 =
  11. 11.476.6 × 10 =
  12. 12.120.3 ÷ 1000 =
  13. 13.21.2 ÷ 1000 =
  14. 14.59.2 × 100 =
  15. 15.222.1 ÷ 10 =
  16. 16.5.4 ÷ 1000 =
  17. 17.7.77 ÷ 100 =
  18. 18.12.64 ÷ 10 =
  19. 19.37.14 × 100 =
  20. 20.77.4 ÷ 100 =
  21. 21.3.27 ÷ 10 =
  22. 22.349.1 × 1000 =
  23. 23.20.27 × 1000 =
  24. 24.7.14 × 10 =
  25. 25.23.04 ÷ 100 =
  26. 26.22.96 ÷ 10 =
  27. 27.36.21 ÷ 1000 =
  28. 28.21.89 ÷ 10 =
  29. 29.137.7 × 100 =
  30. 30.26.81 × 10 =
  31. 31.118.3 × 1000 =
  32. 32.28.13 × 1000 =
  33. 33.22.05 × 100 =
  34. 34.20.71 × 100 =
  35. 35.66.3 × 1000 =
  36. 36.15.86 ÷ 1000 =
  37. 37.5.33 × 1000 =
  38. 38.306.4 × 10 =
  39. 39.6.36 ÷ 1000 =
  40. 40.60.8 × 1000 =

Answer key

  1. 74700
  2. 3888
  3. 3.505
  4. 34250
  5. 29850
  6. 0.1985
  7. 316.6
  8. 131900
  9. 2351
  10. 345600
  11. 4766
  12. 0.1203
  13. 0.0212
  14. 5920
  15. 22.21
  16. 0.0054
  17. 0.0777
  18. 1.264
  19. 3714
  20. 0.774
  21. 0.327
  22. 349100
  23. 20270
  24. 71.4
  25. 0.2304
  26. 2.296
  27. 0.03621
  28. 2.189
  29. 13770
  30. 268.1
  31. 118300
  32. 28130
  33. 2205
  34. 2071
  35. 66300
  36. 0.01586
  37. 5330
  38. 3064
  39. 0.00636
  40. 60800

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