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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 597 · 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. 1.165.5 × 10 =
  2. 2.340.7 × 10 =
  3. 3.276.2 ÷ 10 =
  4. 4.23.41 × 100 =
  5. 5.480.1 ÷ 100 =
  6. 6.210.5 ÷ 10 =
  7. 7.49.31 ÷ 10 =
  8. 8.55.9 × 1000 =
  9. 9.195.4 × 100 =
  10. 10.114.5 × 1000 =
  11. 11.218.7 ÷ 100 =
  12. 12.0.12 × 10 =
  13. 13.240.2 ÷ 100 =
  14. 14.156.1 ÷ 10 =
  15. 15.18.52 ÷ 10 =
  16. 16.384.6 × 100 =
  17. 17.25.88 ÷ 1000 =
  18. 18.245.6 ÷ 1000 =
  19. 19.106.9 ÷ 10 =
  20. 20.12.47 ÷ 100 =
  21. 21.25.61 × 100 =
  22. 22.62.1 ÷ 10 =
  23. 23.178.2 × 10 =
  24. 24.486.3 × 10 =
  25. 25.8.74 ÷ 1000 =
  26. 26.397.4 ÷ 10 =
  27. 27.23.38 ÷ 10 =
  28. 28.66.6 × 10 =
  29. 29.334.3 ÷ 1000 =
  30. 30.409.1 × 10 =
  31. 31.42.95 ÷ 10 =
  32. 32.103.4 ÷ 100 =
  33. 33.12.63 × 100 =
  34. 34.495.1 ÷ 100 =
  35. 35.19.51 × 1000 =
  36. 36.16.08 ÷ 1000 =
  37. 37.260.8 × 1000 =
  38. 38.5.93 × 10 =
  39. 39.12.01 ÷ 10 =
  40. 40.425.6 × 100 =

Answer key

  1. 1655
  2. 3407
  3. 27.62
  4. 2341
  5. 4.801
  6. 21.05
  7. 4.931
  8. 55900
  9. 19540
  10. 114500
  11. 2.187
  12. 1.2
  13. 2.402
  14. 15.61
  15. 1.852
  16. 38460
  17. 0.02588
  18. 0.2456
  19. 10.69
  20. 0.1247
  21. 2561
  22. 6.21
  23. 1782
  24. 4863
  25. 0.00874
  26. 39.74
  27. 2.338
  28. 666
  29. 0.3343
  30. 4091
  31. 4.295
  32. 1.034
  33. 1263
  34. 4.951
  35. 19510
  36. 0.01608
  37. 260800
  38. 59.3
  39. 1.201
  40. 42560

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