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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 59 · 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. 1.378.5 × 100 =
  2. 2.30.01 ÷ 10 =
  3. 3.2.29 ÷ 100 =
  4. 4.198.5 × 1000 =
  5. 5.257.1 ÷ 10 =
  6. 6.185.7 × 1000 =
  7. 7.27.4 ÷ 1000 =
  8. 8.214.3 ÷ 1000 =
  9. 9.43.19 ÷ 10 =
  10. 10.71.5 × 100 =
  11. 11.7.6 ÷ 100 =
  12. 12.33.72 × 10 =
  13. 13.2.54 × 10 =
  14. 14.15.59 ÷ 100 =
  15. 15.13.91 × 10 =
  16. 16.461.4 × 10 =
  17. 17.163.4 ÷ 100 =
  18. 18.377.3 ÷ 100 =
  19. 19.173.4 × 100 =
  20. 20.472.7 × 10 =
  21. 21.19.19 ÷ 10 =
  22. 22.343.4 ÷ 1000 =
  23. 23.361.7 ÷ 1000 =
  24. 24.284.1 ÷ 10 =
  25. 25.45.72 × 100 =
  26. 26.12.37 ÷ 1000 =
  27. 27.474.9 × 10 =
  28. 28.7.12 ÷ 10 =
  29. 29.88.7 × 100 =
  30. 30.218.5 ÷ 10 =
  31. 31.140.8 ÷ 1000 =
  32. 32.16.51 ÷ 10 =
  33. 33.35.89 ÷ 10 =
  34. 34.111.5 ÷ 100 =
  35. 35.491.6 × 1000 =
  36. 36.24.09 × 100 =
  37. 37.224.1 × 10 =
  38. 38.72.5 × 100 =
  39. 39.33.01 × 100 =
  40. 40.6.46 ÷ 1000 =

Answer key

  1. 37850
  2. 3.001
  3. 0.0229
  4. 198500
  5. 25.71
  6. 185700
  7. 0.0274
  8. 0.2143
  9. 4.319
  10. 7150
  11. 0.076
  12. 337.2
  13. 25.4
  14. 0.1559
  15. 139.1
  16. 4614
  17. 1.634
  18. 3.773
  19. 17340
  20. 4727
  21. 1.919
  22. 0.3434
  23. 0.3617
  24. 28.41
  25. 4572
  26. 0.01237
  27. 4749
  28. 0.712
  29. 8870
  30. 21.85
  31. 0.1408
  32. 1.651
  33. 3.589
  34. 1.115
  35. 491600
  36. 2409
  37. 2241
  38. 7250
  39. 3301
  40. 0.00646

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