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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 521 · 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. 1.243.4 × 100 =
  2. 2.45.17 ÷ 100 =
  3. 3.6.75 × 1000 =
  4. 4.46.47 ÷ 100 =
  5. 5.287.7 × 1000 =
  6. 6.27.88 × 10 =
  7. 7.15.93 × 1000 =
  8. 8.457.2 × 100 =
  9. 9.471.1 × 100 =
  10. 10.270.2 ÷ 10 =
  11. 11.259.7 × 10 =
  12. 12.48.33 ÷ 100 =
  13. 13.14.4 ÷ 10 =
  14. 14.462.5 × 10 =
  15. 15.5.7 × 100 =
  16. 16.165.3 × 100 =
  17. 17.17.91 × 10 =
  18. 18.6.13 × 100 =
  19. 19.18.44 ÷ 10 =
  20. 20.1.88 × 1000 =
  21. 21.49.99 × 100 =
  22. 22.39.15 × 100 =
  23. 23.30.56 ÷ 100 =
  24. 24.2.88 × 100 =
  25. 25.453.4 × 10 =
  26. 26.359.4 × 10 =
  27. 27.4.56 × 100 =
  28. 28.3.74 × 10 =
  29. 29.21.03 × 10 =
  30. 30.184.7 × 100 =
  31. 31.29.93 × 1000 =
  32. 32.380.2 ÷ 100 =
  33. 33.154.5 ÷ 10 =
  34. 34.8.5 × 100 =
  35. 35.188.9 × 1000 =
  36. 36.40.51 ÷ 100 =
  37. 37.26.62 × 100 =
  38. 38.118.5 × 100 =
  39. 39.18.46 ÷ 100 =
  40. 40.334.7 ÷ 10 =

Answer key

  1. 24340
  2. 0.4517
  3. 6750
  4. 0.4647
  5. 287700
  6. 278.8
  7. 15930
  8. 45720
  9. 47110
  10. 27.02
  11. 2597
  12. 0.4833
  13. 1.44
  14. 4625
  15. 570
  16. 16530
  17. 179.1
  18. 613
  19. 1.844
  20. 1880
  21. 4999
  22. 3915
  23. 0.3056
  24. 288
  25. 4534
  26. 3594
  27. 456
  28. 37.4
  29. 210.3
  30. 18470
  31. 29930
  32. 3.802
  33. 15.45
  34. 850
  35. 188900
  36. 0.4051
  37. 2662
  38. 11850
  39. 0.1846
  40. 33.47

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