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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 292 · 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. 1.24.85 ÷ 10 =
  2. 2.40.1 × 100 =
  3. 3.43.54 ÷ 10 =
  4. 4.34.69 × 100 =
  5. 5.250.6 × 10 =
  6. 6.13.87 ÷ 1000 =
  7. 7.23.62 × 10 =
  8. 8.48.06 × 100 =
  9. 9.16.34 × 10 =
  10. 10.24.77 × 100 =
  11. 11.497.1 × 1000 =
  12. 12.35.45 ÷ 10 =
  13. 13.337.4 × 100 =
  14. 14.252.8 × 10 =
  15. 15.22.57 × 1000 =
  16. 16.429.1 × 100 =
  17. 17.5.46 × 10 =
  18. 18.7.44 ÷ 100 =
  19. 19.245.5 × 1000 =
  20. 20.25.63 ÷ 100 =
  21. 21.27.43 × 10 =
  22. 22.22.58 × 100 =
  23. 23.265.2 ÷ 1000 =
  24. 24.43.98 × 10 =
  25. 25.47.31 × 10 =
  26. 26.18.91 ÷ 1000 =
  27. 27.163.9 ÷ 100 =
  28. 28.419.5 ÷ 10 =
  29. 29.19.71 ÷ 10 =
  30. 30.28.79 × 10 =
  31. 31.110.9 × 100 =
  32. 32.395.2 × 100 =
  33. 33.80.1 × 10 =
  34. 34.262.8 × 100 =
  35. 35.108.1 ÷ 100 =
  36. 36.31.31 × 10 =
  37. 37.30.75 × 100 =
  38. 38.295.9 × 10 =
  39. 39.2.13 × 10 =
  40. 40.30.2 ÷ 1000 =

Answer key

  1. 2.485
  2. 4010
  3. 4.354
  4. 3469
  5. 2506
  6. 0.01387
  7. 236.2
  8. 4806
  9. 163.4
  10. 2477
  11. 497100
  12. 3.545
  13. 33740
  14. 2528
  15. 22570
  16. 42910
  17. 54.6
  18. 0.0744
  19. 245500
  20. 0.2563
  21. 274.3
  22. 2258
  23. 0.2652
  24. 439.8
  25. 473.1
  26. 0.01891
  27. 1.639
  28. 41.95
  29. 1.971
  30. 287.9
  31. 11090
  32. 39520
  33. 801
  34. 26280
  35. 1.081
  36. 313.1
  37. 3075
  38. 2959
  39. 21.3
  40. 0.0302

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