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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 749 · 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. 1.118.2 × 1000 =
  2. 2.32.3 ÷ 1000 =
  3. 3.26.69 × 100 =
  4. 4.23.38 × 10 =
  5. 5.143.7 × 10 =
  6. 6.46.39 × 1000 =
  7. 7.244.2 × 100 =
  8. 8.26.24 ÷ 100 =
  9. 9.209.1 ÷ 10 =
  10. 10.447.9 ÷ 100 =
  11. 11.257.9 × 1000 =
  12. 12.30.52 ÷ 10 =
  13. 13.19.27 ÷ 10 =
  14. 14.321.6 × 10 =
  15. 15.488.5 ÷ 10 =
  16. 16.409.4 ÷ 1000 =
  17. 17.38.31 × 10 =
  18. 18.231.7 ÷ 1000 =
  19. 19.497.2 × 1000 =
  20. 20.3.1 ÷ 1000 =
  21. 21.26.27 × 1000 =
  22. 22.169.7 ÷ 100 =
  23. 23.16.35 × 100 =
  24. 24.419.1 ÷ 100 =
  25. 25.24.59 ÷ 10 =
  26. 26.39.62 ÷ 10 =
  27. 27.29.36 × 100 =
  28. 28.472.5 ÷ 100 =
  29. 29.432.7 ÷ 100 =
  30. 30.12.71 × 10 =
  31. 31.326.1 × 100 =
  32. 32.176.6 ÷ 10 =
  33. 33.45.48 × 1000 =
  34. 34.41.91 ÷ 10 =
  35. 35.33.18 ÷ 10 =
  36. 36.479.1 × 1000 =
  37. 37.15.97 × 1000 =
  38. 38.360.8 × 10 =
  39. 39.4.51 × 100 =
  40. 40.23.8 × 10 =

Answer key

  1. 118200
  2. 0.0323
  3. 2669
  4. 233.8
  5. 1437
  6. 46390
  7. 24420
  8. 0.2624
  9. 20.91
  10. 4.479
  11. 257900
  12. 3.052
  13. 1.927
  14. 3216
  15. 48.85
  16. 0.4094
  17. 383.1
  18. 0.2317
  19. 497200
  20. 0.0031
  21. 26270
  22. 1.697
  23. 1635
  24. 4.191
  25. 2.459
  26. 3.962
  27. 2936
  28. 4.725
  29. 4.327
  30. 127.1
  31. 32610
  32. 17.66
  33. 45480
  34. 4.191
  35. 3.318
  36. 479100
  37. 15970
  38. 3608
  39. 451
  40. 238

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