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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 770 · 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. 1.41.61 × 1000 =
  2. 2.41.2 ÷ 1000 =
  3. 3.15.15 ÷ 100 =
  4. 4.473.2 × 1000 =
  5. 5.39.42 × 10 =
  6. 6.49.25 ÷ 1000 =
  7. 7.312.8 × 10 =
  8. 8.39.8 × 10 =
  9. 9.86.1 ÷ 10 =
  10. 10.417.1 ÷ 100 =
  11. 11.250.5 × 10 =
  12. 12.13.31 × 10 =
  13. 13.383.2 ÷ 10 =
  14. 14.28.21 ÷ 100 =
  15. 15.17.05 × 100 =
  16. 16.13.64 × 1000 =
  17. 17.30.04 ÷ 100 =
  18. 18.15.9 × 10 =
  19. 19.319.1 × 100 =
  20. 20.2.37 ÷ 100 =
  21. 21.20.18 × 1000 =
  22. 22.46.6 × 10 =
  23. 23.409.3 ÷ 10 =
  24. 24.17.65 ÷ 10 =
  25. 25.234.6 ÷ 1000 =
  26. 26.314.3 × 10 =
  27. 27.110.7 × 100 =
  28. 28.350.1 × 1000 =
  29. 29.28.22 × 10 =
  30. 30.388.4 ÷ 10 =
  31. 31.35.45 × 10 =
  32. 32.48.11 ÷ 100 =
  33. 33.123.4 ÷ 10 =
  34. 34.47.59 ÷ 10 =
  35. 35.76.6 × 1000 =
  36. 36.60.8 × 1000 =
  37. 37.33.35 × 100 =
  38. 38.121.6 ÷ 100 =
  39. 39.43.87 ÷ 1000 =
  40. 40.240.4 ÷ 1000 =

Answer key

  1. 41610
  2. 0.0412
  3. 0.1515
  4. 473200
  5. 394.2
  6. 0.04925
  7. 3128
  8. 398
  9. 8.61
  10. 4.171
  11. 2505
  12. 133.1
  13. 38.32
  14. 0.2821
  15. 1705
  16. 13640
  17. 0.3004
  18. 159
  19. 31910
  20. 0.0237
  21. 20180
  22. 466
  23. 40.93
  24. 1.765
  25. 0.2346
  26. 3143
  27. 11070
  28. 350100
  29. 282.2
  30. 38.84
  31. 354.5
  32. 0.4811
  33. 12.34
  34. 4.759
  35. 76600
  36. 60800
  37. 3335
  38. 1.216
  39. 0.04387
  40. 0.2404

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