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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 741 · 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. 1.439.1 × 1000 =
  2. 2.121.1 × 1000 =
  3. 3.410.7 × 1000 =
  4. 4.4.77 ÷ 10 =
  5. 5.45.45 × 10 =
  6. 6.33.44 ÷ 10 =
  7. 7.43.13 × 100 =
  8. 8.48.38 × 100 =
  9. 9.433.3 × 1000 =
  10. 10.158.1 × 100 =
  11. 11.41.54 ÷ 100 =
  12. 12.8.35 × 10 =
  13. 13.431.4 ÷ 10 =
  14. 14.42.73 ÷ 10 =
  15. 15.332.4 ÷ 100 =
  16. 16.281.4 × 10 =
  17. 17.17.95 ÷ 10 =
  18. 18.33.2 ÷ 10 =
  19. 19.15.05 × 100 =
  20. 20.388.9 × 1000 =
  21. 21.49.59 ÷ 1000 =
  22. 22.219.1 ÷ 100 =
  23. 23.85.3 × 100 =
  24. 24.3.61 ÷ 10 =
  25. 25.5.61 ÷ 1000 =
  26. 26.10.36 × 100 =
  27. 27.257.1 × 1000 =
  28. 28.26.07 ÷ 10 =
  29. 29.440.9 × 100 =
  30. 30.92.1 ÷ 10 =
  31. 31.280.3 × 100 =
  32. 32.312.4 × 10 =
  33. 33.6.64 × 1000 =
  34. 34.189.3 × 10 =
  35. 35.13.87 ÷ 10 =
  36. 36.24.35 ÷ 10 =
  37. 37.274.3 ÷ 100 =
  38. 38.44.16 ÷ 100 =
  39. 39.16.38 × 10 =
  40. 40.0.67 × 100 =

Answer key

  1. 439100
  2. 121100
  3. 410700
  4. 0.477
  5. 454.5
  6. 3.344
  7. 4313
  8. 4838
  9. 433300
  10. 15810
  11. 0.4154
  12. 83.5
  13. 43.14
  14. 4.273
  15. 3.324
  16. 2814
  17. 1.795
  18. 3.32
  19. 1505
  20. 388900
  21. 0.04959
  22. 2.191
  23. 8530
  24. 0.361
  25. 0.00561
  26. 1036
  27. 257100
  28. 2.607
  29. 44090
  30. 9.21
  31. 28030
  32. 3124
  33. 6640
  34. 1893
  35. 1.387
  36. 2.435
  37. 2.743
  38. 0.4416
  39. 163.8
  40. 67

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