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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 255 · 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. 1.397.3 × 10 =
  2. 2.37.38 × 10 =
  3. 3.64.7 × 100 =
  4. 4.87.2 ÷ 10 =
  5. 5.469.5 × 100 =
  6. 6.145.6 × 1000 =
  7. 7.46.67 ÷ 100 =
  8. 8.466.1 ÷ 10 =
  9. 9.284.5 ÷ 100 =
  10. 10.454.8 × 10 =
  11. 11.216.2 ÷ 10 =
  12. 12.8.99 × 10 =
  13. 13.114.7 × 100 =
  14. 14.139.8 × 100 =
  15. 15.182.1 × 100 =
  16. 16.34.47 ÷ 1000 =
  17. 17.125.9 × 1000 =
  18. 18.33.86 × 10 =
  19. 19.24.2 ÷ 10 =
  20. 20.473.7 × 10 =
  21. 21.395.1 × 100 =
  22. 22.453.3 ÷ 10 =
  23. 23.35.96 ÷ 1000 =
  24. 24.26.2 ÷ 100 =
  25. 25.19.1 × 1000 =
  26. 26.8.57 × 10 =
  27. 27.42.38 ÷ 100 =
  28. 28.2.71 ÷ 100 =
  29. 29.227.4 × 10 =
  30. 30.310.3 × 100 =
  31. 31.4.92 ÷ 1000 =
  32. 32.47.31 ÷ 100 =
  33. 33.444.7 ÷ 1000 =
  34. 34.494.4 × 10 =
  35. 35.13.72 × 100 =
  36. 36.29.4 ÷ 1000 =
  37. 37.8.18 × 100 =
  38. 38.248.6 ÷ 10 =
  39. 39.136.7 ÷ 1000 =
  40. 40.29.58 × 10 =

Answer key

  1. 3973
  2. 373.8
  3. 6470
  4. 8.72
  5. 46950
  6. 145600
  7. 0.4667
  8. 46.61
  9. 2.845
  10. 4548
  11. 21.62
  12. 89.9
  13. 11470
  14. 13980
  15. 18210
  16. 0.03447
  17. 125900
  18. 338.6
  19. 2.42
  20. 4737
  21. 39510
  22. 45.33
  23. 0.03596
  24. 0.262
  25. 19100
  26. 85.7
  27. 0.4238
  28. 0.0271
  29. 2274
  30. 31030
  31. 0.00492
  32. 0.4731
  33. 0.4447
  34. 4944
  35. 1372
  36. 0.0294
  37. 818
  38. 24.86
  39. 0.1367
  40. 295.8

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