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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 768 · 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. 1.9.94 ÷ 100 =
  2. 2.103.9 ÷ 1000 =
  3. 3.68.2 × 100 =
  4. 4.436.6 × 1000 =
  5. 5.86.2 ÷ 1000 =
  6. 6.0.49 ÷ 1000 =
  7. 7.221.7 × 10 =
  8. 8.10.1 × 100 =
  9. 9.362.1 × 10 =
  10. 10.377.1 × 1000 =
  11. 11.44.51 ÷ 100 =
  12. 12.40.81 ÷ 100 =
  13. 13.162.1 × 1000 =
  14. 14.22.54 ÷ 1000 =
  15. 15.246.4 × 10 =
  16. 16.364.8 × 10 =
  17. 17.328.8 ÷ 100 =
  18. 18.4.27 ÷ 100 =
  19. 19.239.1 × 10 =
  20. 20.250.2 ÷ 1000 =
  21. 21.353.6 ÷ 1000 =
  22. 22.493.8 ÷ 10 =
  23. 23.8.21 ÷ 10 =
  24. 24.0.84 × 10 =
  25. 25.363.6 ÷ 1000 =
  26. 26.14.99 × 100 =
  27. 27.6.85 ÷ 10 =
  28. 28.20.61 ÷ 10 =
  29. 29.88.6 ÷ 10 =
  30. 30.458.7 ÷ 10 =
  31. 31.43.88 × 1000 =
  32. 32.5.71 × 10 =
  33. 33.378.5 × 100 =
  34. 34.78.3 × 10 =
  35. 35.200.9 ÷ 100 =
  36. 36.363.1 × 1000 =
  37. 37.35.54 × 100 =
  38. 38.22.1 ÷ 1000 =
  39. 39.22.34 ÷ 100 =
  40. 40.94.9 × 100 =

Answer key

  1. 0.0994
  2. 0.1039
  3. 6820
  4. 436600
  5. 0.0862
  6. 0.00049
  7. 2217
  8. 1010
  9. 3621
  10. 377100
  11. 0.4451
  12. 0.4081
  13. 162100
  14. 0.02254
  15. 2464
  16. 3648
  17. 3.288
  18. 0.0427
  19. 2391
  20. 0.2502
  21. 0.3536
  22. 49.38
  23. 0.821
  24. 8.4
  25. 0.3636
  26. 1499
  27. 0.685
  28. 2.061
  29. 8.86
  30. 45.87
  31. 43880
  32. 57.1
  33. 37850
  34. 783
  35. 2.009
  36. 363100
  37. 3554
  38. 0.0221
  39. 0.2234
  40. 9490

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