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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 152 · 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. 1.117.4 × 10 =
  2. 2.279.2 ÷ 100 =
  3. 3.31.14 ÷ 1000 =
  4. 4.28.38 ÷ 1000 =
  5. 5.19.67 × 1000 =
  6. 6.25.03 ÷ 10 =
  7. 7.172.7 × 100 =
  8. 8.333.1 ÷ 1000 =
  9. 9.36.69 × 10 =
  10. 10.47.1 × 100 =
  11. 11.12.13 ÷ 10 =
  12. 12.31.45 ÷ 10 =
  13. 13.16.66 × 1000 =
  14. 14.5.6 × 1000 =
  15. 15.401.1 × 1000 =
  16. 16.3.52 × 100 =
  17. 17.29.51 ÷ 1000 =
  18. 18.279.2 ÷ 1000 =
  19. 19.197.3 × 10 =
  20. 20.41.3 ÷ 1000 =
  21. 21.124.5 × 100 =
  22. 22.59.4 ÷ 100 =
  23. 23.4.37 ÷ 100 =
  24. 24.253.9 ÷ 100 =
  25. 25.293.2 ÷ 10 =
  26. 26.36.1 × 10 =
  27. 27.5.21 ÷ 10 =
  28. 28.448.9 × 1000 =
  29. 29.43.16 × 10 =
  30. 30.281.3 × 100 =
  31. 31.41.7 × 10 =
  32. 32.11.62 ÷ 10 =
  33. 33.6.98 ÷ 10 =
  34. 34.25.4 × 10 =
  35. 35.8.68 ÷ 1000 =
  36. 36.45.35 × 1000 =
  37. 37.23.2 × 1000 =
  38. 38.325.4 × 1000 =
  39. 39.86.5 ÷ 1000 =
  40. 40.185.5 ÷ 1000 =

Answer key

  1. 1174
  2. 2.792
  3. 0.03114
  4. 0.02838
  5. 19670
  6. 2.503
  7. 17270
  8. 0.3331
  9. 366.9
  10. 4710
  11. 1.213
  12. 3.145
  13. 16660
  14. 5600
  15. 401100
  16. 352
  17. 0.02951
  18. 0.2792
  19. 1973
  20. 0.0413
  21. 12450
  22. 0.594
  23. 0.0437
  24. 2.539
  25. 29.32
  26. 361
  27. 0.521
  28. 448900
  29. 431.6
  30. 28130
  31. 417
  32. 1.162
  33. 0.698
  34. 254
  35. 0.00868
  36. 45350
  37. 23200
  38. 325400
  39. 0.0865
  40. 0.1855

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