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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 177 · 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. 1.439.2 × 100 =
  2. 2.334.8 × 1000 =
  3. 3.137.4 ÷ 10 =
  4. 4.49.95 ÷ 1000 =
  5. 5.5.45 ÷ 10 =
  6. 6.380.1 × 1000 =
  7. 7.17.9 ÷ 10 =
  8. 8.95.8 × 1000 =
  9. 9.457.1 × 10 =
  10. 10.310.2 × 10 =
  11. 11.3.81 ÷ 1000 =
  12. 12.222.9 ÷ 100 =
  13. 13.44.2 × 10 =
  14. 14.2.55 × 100 =
  15. 15.36.67 × 1000 =
  16. 16.469.8 ÷ 1000 =
  17. 17.3.11 × 1000 =
  18. 18.144.7 ÷ 100 =
  19. 19.132.1 ÷ 1000 =
  20. 20.161.1 ÷ 1000 =
  21. 21.17.01 ÷ 1000 =
  22. 22.407.1 ÷ 1000 =
  23. 23.32.78 × 1000 =
  24. 24.235.6 × 1000 =
  25. 25.7.61 ÷ 100 =
  26. 26.39.71 ÷ 10 =
  27. 27.156.1 × 10 =
  28. 28.120.7 × 1000 =
  29. 29.226.7 × 100 =
  30. 30.79.4 × 1000 =
  31. 31.77.9 × 100 =
  32. 32.21.96 ÷ 1000 =
  33. 33.18.26 ÷ 1000 =
  34. 34.6.58 ÷ 10 =
  35. 35.115.1 ÷ 10 =
  36. 36.14.78 ÷ 100 =
  37. 37.36.51 × 1000 =
  38. 38.97.1 × 10 =
  39. 39.14.47 ÷ 1000 =
  40. 40.407.9 ÷ 100 =

Answer key

  1. 43920
  2. 334800
  3. 13.74
  4. 0.04995
  5. 0.545
  6. 380100
  7. 1.79
  8. 95800
  9. 4571
  10. 3102
  11. 0.00381
  12. 2.229
  13. 442
  14. 255
  15. 36670
  16. 0.4698
  17. 3110
  18. 1.447
  19. 0.1321
  20. 0.1611
  21. 0.01701
  22. 0.4071
  23. 32780
  24. 235600
  25. 0.0761
  26. 3.971
  27. 1561
  28. 120700
  29. 22670
  30. 79400
  31. 7790
  32. 0.02196
  33. 0.01826
  34. 0.658
  35. 11.51
  36. 0.1478
  37. 36510
  38. 971
  39. 0.01447
  40. 4.079

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