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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 195 · 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. 1.39.59 × 1000 =
  2. 2.291.6 × 1000 =
  3. 3.142.3 × 100 =
  4. 4.265.4 ÷ 10 =
  5. 5.216.7 × 100 =
  6. 6.17.94 ÷ 1000 =
  7. 7.459.9 × 1000 =
  8. 8.341.2 ÷ 1000 =
  9. 9.45.05 × 100 =
  10. 10.149.2 × 10 =
  11. 11.488.2 × 10 =
  12. 12.51.6 × 10 =
  13. 13.478.1 × 1000 =
  14. 14.263.5 × 10 =
  15. 15.138.6 × 10 =
  16. 16.54.6 × 10 =
  17. 17.315.3 × 1000 =
  18. 18.7.1 × 100 =
  19. 19.6.51 ÷ 10 =
  20. 20.211.7 × 10 =
  21. 21.438.5 ÷ 1000 =
  22. 22.74.1 ÷ 10 =
  23. 23.42.61 × 1000 =
  24. 24.253.8 × 100 =
  25. 25.30.12 ÷ 10 =
  26. 26.23.48 × 10 =
  27. 27.39.86 × 100 =
  28. 28.13.91 ÷ 100 =
  29. 29.17.92 ÷ 1000 =
  30. 30.233.1 ÷ 10 =
  31. 31.102.1 ÷ 1000 =
  32. 32.439.2 ÷ 10 =
  33. 33.20.45 × 10 =
  34. 34.13.65 × 100 =
  35. 35.415.6 ÷ 10 =
  36. 36.41.71 ÷ 10 =
  37. 37.11.04 × 1000 =
  38. 38.11.82 × 1000 =
  39. 39.113.8 × 10 =
  40. 40.83.8 ÷ 10 =

Answer key

  1. 39590
  2. 291600
  3. 14230
  4. 26.54
  5. 21670
  6. 0.01794
  7. 459900
  8. 0.3412
  9. 4505
  10. 1492
  11. 4882
  12. 516
  13. 478100
  14. 2635
  15. 1386
  16. 546
  17. 315300
  18. 710
  19. 0.651
  20. 2117
  21. 0.4385
  22. 7.41
  23. 42610
  24. 25380
  25. 3.012
  26. 234.8
  27. 3986
  28. 0.1391
  29. 0.01792
  30. 23.31
  31. 0.1021
  32. 43.92
  33. 204.5
  34. 1365
  35. 41.56
  36. 4.171
  37. 11040
  38. 11820
  39. 1138
  40. 8.38

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