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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 505 · 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. 1.27.3 ÷ 100 =
  2. 2.47.3 × 10 =
  3. 3.312.6 × 100 =
  4. 4.6.12 × 100 =
  5. 5.44.96 × 100 =
  6. 6.2.68 ÷ 1000 =
  7. 7.248.3 ÷ 100 =
  8. 8.40.71 × 1000 =
  9. 9.18.24 × 10 =
  10. 10.49.85 ÷ 100 =
  11. 11.332.5 ÷ 1000 =
  12. 12.205.6 × 10 =
  13. 13.13.81 ÷ 10 =
  14. 14.25.61 ÷ 1000 =
  15. 15.23.14 ÷ 10 =
  16. 16.176.9 ÷ 100 =
  17. 17.24.41 × 1000 =
  18. 18.7.72 ÷ 100 =
  19. 19.157.4 ÷ 10 =
  20. 20.402.8 ÷ 100 =
  21. 21.7.66 × 1000 =
  22. 22.32.75 ÷ 1000 =
  23. 23.191.1 ÷ 10 =
  24. 24.23.41 × 1000 =
  25. 25.29.31 ÷ 1000 =
  26. 26.180.8 × 100 =
  27. 27.22.55 × 100 =
  28. 28.48.3 × 10 =
  29. 29.116.8 × 100 =
  30. 30.17.1 ÷ 1000 =
  31. 31.128.3 × 100 =
  32. 32.13.25 × 10 =
  33. 33.30.28 × 1000 =
  34. 34.101.1 × 1000 =
  35. 35.48.91 × 10 =
  36. 36.360.5 × 100 =
  37. 37.4.74 × 10 =
  38. 38.43.71 × 100 =
  39. 39.327.3 × 1000 =
  40. 40.475.9 × 1000 =

Answer key

  1. 0.273
  2. 473
  3. 31260
  4. 612
  5. 4496
  6. 0.00268
  7. 2.483
  8. 40710
  9. 182.4
  10. 0.4985
  11. 0.3325
  12. 2056
  13. 1.381
  14. 0.02561
  15. 2.314
  16. 1.769
  17. 24410
  18. 0.0772
  19. 15.74
  20. 4.028
  21. 7660
  22. 0.03275
  23. 19.11
  24. 23410
  25. 0.02931
  26. 18080
  27. 2255
  28. 483
  29. 11680
  30. 0.0171
  31. 12830
  32. 132.5
  33. 30280
  34. 101100
  35. 489.1
  36. 36050
  37. 47.4
  38. 4371
  39. 327300
  40. 475900

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