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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 386 · 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. 1.8.21 ÷ 10 =
  2. 2.9.56 ÷ 1000 =
  3. 3.291.4 × 1000 =
  4. 4.426.6 ÷ 10 =
  5. 5.23.21 × 100 =
  6. 6.24.1 ÷ 10 =
  7. 7.383.2 × 100 =
  8. 8.33.41 × 1000 =
  9. 9.1.22 ÷ 1000 =
  10. 10.240.8 × 10 =
  11. 11.24.23 × 100 =
  12. 12.25.75 × 1000 =
  13. 13.7.47 ÷ 1000 =
  14. 14.10.97 × 10 =
  15. 15.352.3 ÷ 1000 =
  16. 16.280.5 × 100 =
  17. 17.34.3 × 1000 =
  18. 18.417.6 ÷ 10 =
  19. 19.2.24 × 100 =
  20. 20.233.3 × 10 =
  21. 21.70.6 × 1000 =
  22. 22.24.41 × 100 =
  23. 23.48.27 ÷ 100 =
  24. 24.16.2 × 10 =
  25. 25.301.8 × 10 =
  26. 26.48.66 × 10 =
  27. 27.26.55 ÷ 100 =
  28. 28.49.75 ÷ 10 =
  29. 29.190.2 × 10 =
  30. 30.444.2 ÷ 10 =
  31. 31.8.11 × 100 =
  32. 32.5.32 ÷ 10 =
  33. 33.463.1 × 1000 =
  34. 34.82.4 × 10 =
  35. 35.12.87 ÷ 1000 =
  36. 36.14.9 ÷ 100 =
  37. 37.31.1 × 100 =
  38. 38.16.32 × 1000 =
  39. 39.318.9 × 1000 =
  40. 40.49.01 ÷ 100 =

Answer key

  1. 0.821
  2. 0.00956
  3. 291400
  4. 42.66
  5. 2321
  6. 2.41
  7. 38320
  8. 33410
  9. 0.00122
  10. 2408
  11. 2423
  12. 25750
  13. 0.00747
  14. 109.7
  15. 0.3523
  16. 28050
  17. 34300
  18. 41.76
  19. 224
  20. 2333
  21. 70600
  22. 2441
  23. 0.4827
  24. 162
  25. 3018
  26. 486.6
  27. 0.2655
  28. 4.975
  29. 1902
  30. 44.42
  31. 811
  32. 0.532
  33. 463100
  34. 824
  35. 0.01287
  36. 0.149
  37. 3110
  38. 16320
  39. 318900
  40. 0.4901

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