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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 725 · 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. 1.2.9 ÷ 1000 =
  2. 2.141.7 ÷ 100 =
  3. 3.286.9 × 10 =
  4. 4.20.76 × 100 =
  5. 5.87.5 ÷ 1000 =
  6. 6.36.21 ÷ 10 =
  7. 7.195.5 × 100 =
  8. 8.40.41 ÷ 100 =
  9. 9.4.41 × 1000 =
  10. 10.12.58 ÷ 1000 =
  11. 11.45.42 × 10 =
  12. 12.19.32 × 10 =
  13. 13.179.3 × 1000 =
  14. 14.4.25 × 1000 =
  15. 15.39.11 ÷ 1000 =
  16. 16.4.17 × 100 =
  17. 17.20.9 × 1000 =
  18. 18.0.67 × 10 =
  19. 19.220.3 × 100 =
  20. 20.196.4 × 1000 =
  21. 21.36.89 ÷ 1000 =
  22. 22.13.94 × 1000 =
  23. 23.307.6 ÷ 10 =
  24. 24.235.1 × 100 =
  25. 25.355.7 ÷ 100 =
  26. 26.13.46 × 100 =
  27. 27.186.5 ÷ 1000 =
  28. 28.28.9 × 100 =
  29. 29.0.15 ÷ 10 =
  30. 30.49.57 ÷ 100 =
  31. 31.3.14 × 1000 =
  32. 32.44.6 ÷ 1000 =
  33. 33.438.1 ÷ 100 =
  34. 34.293.8 ÷ 10 =
  35. 35.302.6 ÷ 1000 =
  36. 36.117.1 ÷ 10 =
  37. 37.4.03 × 1000 =
  38. 38.334.3 ÷ 10 =
  39. 39.42.24 × 1000 =
  40. 40.187.3 × 1000 =

Answer key

  1. 0.0029
  2. 1.417
  3. 2869
  4. 2076
  5. 0.0875
  6. 3.621
  7. 19550
  8. 0.4041
  9. 4410
  10. 0.01258
  11. 454.2
  12. 193.2
  13. 179300
  14. 4250
  15. 0.03911
  16. 417
  17. 20900
  18. 6.7
  19. 22030
  20. 196400
  21. 0.03689
  22. 13940
  23. 30.76
  24. 23510
  25. 3.557
  26. 1346
  27. 0.1865
  28. 2890
  29. 0.015
  30. 0.4957
  31. 3140
  32. 0.0446
  33. 4.381
  34. 29.38
  35. 0.3026
  36. 11.71
  37. 4030
  38. 33.43
  39. 42240
  40. 187300

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