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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 745 · 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. 1.8.59 × 10 =
  2. 2.126.6 ÷ 10 =
  3. 3.7.13 ÷ 1000 =
  4. 4.327.9 ÷ 100 =
  5. 5.4.31 ÷ 10 =
  6. 6.430.3 ÷ 1000 =
  7. 7.216.3 × 100 =
  8. 8.370.5 ÷ 1000 =
  9. 9.33.9 ÷ 100 =
  10. 10.46.75 × 10 =
  11. 11.80.4 × 10 =
  12. 12.15.27 ÷ 1000 =
  13. 13.37.91 ÷ 1000 =
  14. 14.201.8 × 10 =
  15. 15.378.9 × 100 =
  16. 16.14.22 ÷ 1000 =
  17. 17.4.29 × 10 =
  18. 18.207.1 ÷ 10 =
  19. 19.346.4 ÷ 100 =
  20. 20.93.1 ÷ 100 =
  21. 21.242.1 ÷ 10 =
  22. 22.92.2 × 10 =
  23. 23.494.4 × 10 =
  24. 24.116.9 × 100 =
  25. 25.101.4 × 1000 =
  26. 26.41.96 × 100 =
  27. 27.366.3 ÷ 10 =
  28. 28.332.1 × 1000 =
  29. 29.61.3 ÷ 100 =
  30. 30.6.81 × 100 =
  31. 31.28.41 ÷ 100 =
  32. 32.40.39 × 100 =
  33. 33.14.67 × 1000 =
  34. 34.258.3 × 1000 =
  35. 35.24.16 × 10 =
  36. 36.19.3 ÷ 10 =
  37. 37.38.54 × 10 =
  38. 38.46.95 ÷ 10 =
  39. 39.245.2 ÷ 1000 =
  40. 40.484.5 × 100 =

Answer key

  1. 85.9
  2. 12.66
  3. 0.00713
  4. 3.279
  5. 0.431
  6. 0.4303
  7. 21630
  8. 0.3705
  9. 0.339
  10. 467.5
  11. 804
  12. 0.01527
  13. 0.03791
  14. 2018
  15. 37890
  16. 0.01422
  17. 42.9
  18. 20.71
  19. 3.464
  20. 0.931
  21. 24.21
  22. 922
  23. 4944
  24. 11690
  25. 101400
  26. 4196
  27. 36.63
  28. 332100
  29. 0.613
  30. 681
  31. 0.2841
  32. 4039
  33. 14670
  34. 258300
  35. 241.6
  36. 1.93
  37. 385.4
  38. 4.695
  39. 0.2452
  40. 48450

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