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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 560 · 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. 1.223.1 ÷ 100 =
  2. 2.23.04 × 100 =
  3. 3.193.2 ÷ 100 =
  4. 4.293.8 ÷ 10 =
  5. 5.36.5 ÷ 100 =
  6. 6.19.31 × 100 =
  7. 7.31.13 × 100 =
  8. 8.49.97 ÷ 100 =
  9. 9.12.93 × 100 =
  10. 10.455.3 × 100 =
  11. 11.414.8 × 1000 =
  12. 12.292.1 ÷ 1000 =
  13. 13.10.9 ÷ 1000 =
  14. 14.41.48 ÷ 10 =
  15. 15.21.82 × 100 =
  16. 16.3.77 ÷ 1000 =
  17. 17.434.5 ÷ 100 =
  18. 18.170.3 ÷ 10 =
  19. 19.4.08 × 100 =
  20. 20.485.9 ÷ 1000 =
  21. 21.204.1 ÷ 100 =
  22. 22.213.3 ÷ 100 =
  23. 23.306.8 ÷ 1000 =
  24. 24.498.1 ÷ 1000 =
  25. 25.353.1 ÷ 1000 =
  26. 26.136.6 ÷ 1000 =
  27. 27.260.6 × 10 =
  28. 28.6.3 × 100 =
  29. 29.147.2 ÷ 10 =
  30. 30.139.8 ÷ 1000 =
  31. 31.13.31 × 1000 =
  32. 32.21.14 × 10 =
  33. 33.8.31 ÷ 10 =
  34. 34.34.51 × 10 =
  35. 35.38.09 × 100 =
  36. 36.31.5 × 10 =
  37. 37.211.1 ÷ 10 =
  38. 38.314.1 ÷ 10 =
  39. 39.14.72 × 1000 =
  40. 40.33.01 × 10 =

Answer key

  1. 2.231
  2. 2304
  3. 1.932
  4. 29.38
  5. 0.365
  6. 1931
  7. 3113
  8. 0.4997
  9. 1293
  10. 45530
  11. 414800
  12. 0.2921
  13. 0.0109
  14. 4.148
  15. 2182
  16. 0.00377
  17. 4.345
  18. 17.03
  19. 408
  20. 0.4859
  21. 2.041
  22. 2.133
  23. 0.3068
  24. 0.4981
  25. 0.3531
  26. 0.1366
  27. 2606
  28. 630
  29. 14.72
  30. 0.1398
  31. 13310
  32. 211.4
  33. 0.831
  34. 345.1
  35. 3809
  36. 315
  37. 21.11
  38. 31.41
  39. 14720
  40. 330.1

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