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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 975 · 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. 1.23.99 ÷ 1000 =
  2. 2.46.43 × 10 =
  3. 3.284.2 × 100 =
  4. 4.27.42 × 10 =
  5. 5.219.1 × 100 =
  6. 6.2.47 × 100 =
  7. 7.26.14 ÷ 10 =
  8. 8.37.9 ÷ 1000 =
  9. 9.45.75 ÷ 10 =
  10. 10.9.27 × 10 =
  11. 11.28.13 × 1000 =
  12. 12.446.1 × 100 =
  13. 13.330.4 × 100 =
  14. 14.13.81 × 100 =
  15. 15.4.1 × 10 =
  16. 16.211.7 ÷ 1000 =
  17. 17.387.9 ÷ 10 =
  18. 18.405.4 × 10 =
  19. 19.169.1 × 10 =
  20. 20.83.7 × 1000 =
  21. 21.40.6 ÷ 10 =
  22. 22.279.4 × 10 =
  23. 23.12.72 ÷ 100 =
  24. 24.39.54 ÷ 100 =
  25. 25.7.78 ÷ 100 =
  26. 26.218.1 × 1000 =
  27. 27.22.49 × 100 =
  28. 28.4.84 ÷ 100 =
  29. 29.278.6 × 10 =
  30. 30.30.74 × 1000 =
  31. 31.449.5 ÷ 10 =
  32. 32.285.9 × 10 =
  33. 33.26.88 × 100 =
  34. 34.17.44 ÷ 100 =
  35. 35.101.9 × 10 =
  36. 36.213.5 ÷ 100 =
  37. 37.157.3 ÷ 1000 =
  38. 38.406.3 × 1000 =
  39. 39.22.37 ÷ 1000 =
  40. 40.41.05 ÷ 1000 =

Answer key

  1. 0.02399
  2. 464.3
  3. 28420
  4. 274.2
  5. 21910
  6. 247
  7. 2.614
  8. 0.0379
  9. 4.575
  10. 92.7
  11. 28130
  12. 44610
  13. 33040
  14. 1381
  15. 41
  16. 0.2117
  17. 38.79
  18. 4054
  19. 1691
  20. 83700
  21. 4.06
  22. 2794
  23. 0.1272
  24. 0.3954
  25. 0.0778
  26. 218100
  27. 2249
  28. 0.0484
  29. 2786
  30. 30740
  31. 44.95
  32. 2859
  33. 2688
  34. 0.1744
  35. 1019
  36. 2.135
  37. 0.1573
  38. 406300
  39. 0.02237
  40. 0.04105

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