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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 893 · 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. 1.21.1 ÷ 10 =
  2. 2.321.1 × 1000 =
  3. 3.330.7 ÷ 100 =
  4. 4.268.1 × 1000 =
  5. 5.38.45 ÷ 10 =
  6. 6.323.1 × 10 =
  7. 7.421.4 × 1000 =
  8. 8.98.1 ÷ 1000 =
  9. 9.239.7 ÷ 10 =
  10. 10.23.7 ÷ 10 =
  11. 11.6.52 × 1000 =
  12. 12.110.3 ÷ 100 =
  13. 13.42.99 ÷ 10 =
  14. 14.31.6 ÷ 10 =
  15. 15.83.6 ÷ 10 =
  16. 16.304.3 ÷ 100 =
  17. 17.420.5 ÷ 10 =
  18. 18.72.4 ÷ 1000 =
  19. 19.255.9 × 10 =
  20. 20.48.58 ÷ 10 =
  21. 21.330.3 × 1000 =
  22. 22.11.42 ÷ 100 =
  23. 23.19.16 ÷ 10 =
  24. 24.7.05 × 10 =
  25. 25.13.77 × 10 =
  26. 26.27.99 ÷ 10 =
  27. 27.30.57 ÷ 10 =
  28. 28.11.61 ÷ 1000 =
  29. 29.20.68 × 100 =
  30. 30.10.07 ÷ 10 =
  31. 31.21.14 ÷ 10 =
  32. 32.141.3 ÷ 1000 =
  33. 33.4.85 × 1000 =
  34. 34.4.03 ÷ 10 =
  35. 35.20.51 × 100 =
  36. 36.30.93 × 1000 =
  37. 37.110.4 ÷ 10 =
  38. 38.405.1 ÷ 100 =
  39. 39.100.1 × 10 =
  40. 40.26.19 ÷ 1000 =

Answer key

  1. 2.11
  2. 321100
  3. 3.307
  4. 268100
  5. 3.845
  6. 3231
  7. 421400
  8. 0.0981
  9. 23.97
  10. 2.37
  11. 6520
  12. 1.103
  13. 4.299
  14. 3.16
  15. 8.36
  16. 3.043
  17. 42.05
  18. 0.0724
  19. 2559
  20. 4.858
  21. 330300
  22. 0.1142
  23. 1.916
  24. 70.5
  25. 137.7
  26. 2.799
  27. 3.057
  28. 0.01161
  29. 2068
  30. 1.007
  31. 2.114
  32. 0.1413
  33. 4850
  34. 0.403
  35. 2051
  36. 30930
  37. 11.04
  38. 4.051
  39. 1001
  40. 0.02619

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