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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 760 · 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. 1.274.4 × 100 =
  2. 2.264.2 ÷ 1000 =
  3. 3.231.7 × 1000 =
  4. 4.48.1 × 10 =
  5. 5.299.7 ÷ 10 =
  6. 6.477.1 ÷ 100 =
  7. 7.22.2 × 10 =
  8. 8.42.58 × 10 =
  9. 9.49.92 × 100 =
  10. 10.429.5 × 100 =
  11. 11.3.42 × 100 =
  12. 12.24.96 × 10 =
  13. 13.325.1 ÷ 10 =
  14. 14.13.97 ÷ 10 =
  15. 15.139.1 × 1000 =
  16. 16.19.53 × 10 =
  17. 17.106.1 ÷ 1000 =
  18. 18.366.3 × 1000 =
  19. 19.83.1 ÷ 10 =
  20. 20.26.11 × 1000 =
  21. 21.337.5 × 1000 =
  22. 22.35.73 ÷ 100 =
  23. 23.128.7 × 10 =
  24. 24.356.1 ÷ 1000 =
  25. 25.23.61 × 100 =
  26. 26.370.1 × 100 =
  27. 27.30.84 ÷ 100 =
  28. 28.4.57 × 100 =
  29. 29.8.01 × 100 =
  30. 30.24.98 ÷ 100 =
  31. 31.330.3 ÷ 100 =
  32. 32.439.9 × 100 =
  33. 33.404.3 × 100 =
  34. 34.12.35 ÷ 10 =
  35. 35.32.89 × 100 =
  36. 36.368.9 × 10 =
  37. 37.48.84 × 1000 =
  38. 38.22.46 × 100 =
  39. 39.442.6 × 100 =
  40. 40.45.39 ÷ 100 =

Answer key

  1. 27440
  2. 0.2642
  3. 231700
  4. 481
  5. 29.97
  6. 4.771
  7. 222
  8. 425.8
  9. 4992
  10. 42950
  11. 342
  12. 249.6
  13. 32.51
  14. 1.397
  15. 139100
  16. 195.3
  17. 0.1061
  18. 366300
  19. 8.31
  20. 26110
  21. 337500
  22. 0.3573
  23. 1287
  24. 0.3561
  25. 2361
  26. 37010
  27. 0.3084
  28. 457
  29. 801
  30. 0.2498
  31. 3.303
  32. 43990
  33. 40430
  34. 1.235
  35. 3289
  36. 3689
  37. 48840
  38. 2246
  39. 44260
  40. 0.4539

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