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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 692 · 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. 1.6.64 × 10 =
  2. 2.253.1 × 100 =
  3. 3.7.19 ÷ 100 =
  4. 4.406.6 × 10 =
  5. 5.45.58 × 100 =
  6. 6.1.45 ÷ 10 =
  7. 7.49.91 × 10 =
  8. 8.39.3 ÷ 10 =
  9. 9.301.3 ÷ 1000 =
  10. 10.6.25 × 10 =
  11. 11.44.44 × 1000 =
  12. 12.3.04 ÷ 10 =
  13. 13.10.61 × 100 =
  14. 14.264.7 × 1000 =
  15. 15.1.32 × 10 =
  16. 16.24.95 × 100 =
  17. 17.48.01 ÷ 100 =
  18. 18.90.5 ÷ 100 =
  19. 19.113.3 × 1000 =
  20. 20.24.21 ÷ 100 =
  21. 21.98.2 × 10 =
  22. 22.20.62 × 100 =
  23. 23.4.91 × 10 =
  24. 24.15.25 × 10 =
  25. 25.8.69 ÷ 10 =
  26. 26.22.57 × 10 =
  27. 27.279.8 ÷ 100 =
  28. 28.51.1 × 1000 =
  29. 29.25.72 × 1000 =
  30. 30.12.38 × 1000 =
  31. 31.18.02 ÷ 100 =
  32. 32.34.61 × 1000 =
  33. 33.492.5 ÷ 10 =
  34. 34.44.1 ÷ 10 =
  35. 35.56.7 × 10 =
  36. 36.431.6 ÷ 10 =
  37. 37.43.59 ÷ 10 =
  38. 38.471.5 ÷ 10 =
  39. 39.23.27 × 100 =
  40. 40.21.43 ÷ 100 =

Answer key

  1. 66.4
  2. 25310
  3. 0.0719
  4. 4066
  5. 4558
  6. 0.145
  7. 499.1
  8. 3.93
  9. 0.3013
  10. 62.5
  11. 44440
  12. 0.304
  13. 1061
  14. 264700
  15. 13.2
  16. 2495
  17. 0.4801
  18. 0.905
  19. 113300
  20. 0.2421
  21. 982
  22. 2062
  23. 49.1
  24. 152.5
  25. 0.869
  26. 225.7
  27. 2.798
  28. 51100
  29. 25720
  30. 12380
  31. 0.1802
  32. 34610
  33. 49.25
  34. 4.41
  35. 567
  36. 43.16
  37. 4.359
  38. 47.15
  39. 2327
  40. 0.2143

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