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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 306 · 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. 1.25.31 ÷ 10 =
  2. 2.344.7 ÷ 1000 =
  3. 3.167.6 × 10 =
  4. 4.469.2 ÷ 1000 =
  5. 5.45.17 × 10 =
  6. 6.26.09 ÷ 100 =
  7. 7.14.11 ÷ 100 =
  8. 8.33.69 × 100 =
  9. 9.48.24 ÷ 1000 =
  10. 10.360.7 × 1000 =
  11. 11.337.2 × 10 =
  12. 12.420.5 × 100 =
  13. 13.133.5 ÷ 1000 =
  14. 14.7.22 ÷ 10 =
  15. 15.334.9 × 100 =
  16. 16.10.59 ÷ 1000 =
  17. 17.223.6 × 10 =
  18. 18.248.5 ÷ 100 =
  19. 19.274.1 ÷ 1000 =
  20. 20.45.1 ÷ 10 =
  21. 21.121.6 ÷ 10 =
  22. 22.188.1 × 10 =
  23. 23.7.9 × 1000 =
  24. 24.14.36 × 1000 =
  25. 25.21.77 ÷ 1000 =
  26. 26.2.12 × 1000 =
  27. 27.36.57 × 1000 =
  28. 28.71.5 ÷ 100 =
  29. 29.405.3 ÷ 100 =
  30. 30.30.4 ÷ 100 =
  31. 31.40.52 ÷ 1000 =
  32. 32.250.3 × 10 =
  33. 33.13.35 ÷ 10 =
  34. 34.49.35 × 100 =
  35. 35.50.1 ÷ 100 =
  36. 36.21.08 ÷ 100 =
  37. 37.146.1 ÷ 10 =
  38. 38.40.89 ÷ 10 =
  39. 39.43.71 × 100 =
  40. 40.89.4 × 100 =

Answer key

  1. 2.531
  2. 0.3447
  3. 1676
  4. 0.4692
  5. 451.7
  6. 0.2609
  7. 0.1411
  8. 3369
  9. 0.04824
  10. 360700
  11. 3372
  12. 42050
  13. 0.1335
  14. 0.722
  15. 33490
  16. 0.01059
  17. 2236
  18. 2.485
  19. 0.2741
  20. 4.51
  21. 12.16
  22. 1881
  23. 7900
  24. 14360
  25. 0.02177
  26. 2120
  27. 36570
  28. 0.715
  29. 4.053
  30. 0.304
  31. 0.04052
  32. 2503
  33. 1.335
  34. 4935
  35. 0.501
  36. 0.2108
  37. 14.61
  38. 4.089
  39. 4371
  40. 8940

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