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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 942 · 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. 1.295.7 ÷ 10 =
  2. 2.25.56 × 10 =
  3. 3.4.91 × 100 =
  4. 4.25.44 × 10 =
  5. 5.392.4 × 100 =
  6. 6.22.1 ÷ 1000 =
  7. 7.242.4 ÷ 100 =
  8. 8.24.33 × 1000 =
  9. 9.341.3 × 100 =
  10. 10.1.29 × 100 =
  11. 11.21.08 × 100 =
  12. 12.47.59 × 10 =
  13. 13.46.77 × 1000 =
  14. 14.367.1 × 100 =
  15. 15.235.9 ÷ 100 =
  16. 16.34.12 ÷ 10 =
  17. 17.42.81 ÷ 100 =
  18. 18.427.8 ÷ 10 =
  19. 19.460.8 × 10 =
  20. 20.22.1 × 10 =
  21. 21.22.74 ÷ 100 =
  22. 22.17.14 × 1000 =
  23. 23.191.2 × 1000 =
  24. 24.18.9 ÷ 1000 =
  25. 25.41.97 ÷ 10 =
  26. 26.351.2 ÷ 1000 =
  27. 27.36.53 × 1000 =
  28. 28.29.35 ÷ 1000 =
  29. 29.26.41 × 100 =
  30. 30.365.1 ÷ 1000 =
  31. 31.40.26 ÷ 1000 =
  32. 32.442.1 × 100 =
  33. 33.421.1 × 10 =
  34. 34.25.35 ÷ 100 =
  35. 35.29.71 ÷ 100 =
  36. 36.28.43 × 1000 =
  37. 37.31.12 ÷ 100 =
  38. 38.32.25 × 1000 =
  39. 39.445.4 ÷ 10 =
  40. 40.18.38 × 100 =

Answer key

  1. 29.57
  2. 255.6
  3. 491
  4. 254.4
  5. 39240
  6. 0.0221
  7. 2.424
  8. 24330
  9. 34130
  10. 129
  11. 2108
  12. 475.9
  13. 46770
  14. 36710
  15. 2.359
  16. 3.412
  17. 0.4281
  18. 42.78
  19. 4608
  20. 221
  21. 0.2274
  22. 17140
  23. 191200
  24. 0.0189
  25. 4.197
  26. 0.3512
  27. 36530
  28. 0.02935
  29. 2641
  30. 0.3651
  31. 0.04026
  32. 44210
  33. 4211
  34. 0.2535
  35. 0.2971
  36. 28430
  37. 0.3112
  38. 32250
  39. 44.54
  40. 1838

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