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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 790 · 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. 1.12.6 × 100 =
  2. 2.2.16 × 100 =
  3. 3.60.6 × 100 =
  4. 4.284.3 ÷ 100 =
  5. 5.3.95 × 10 =
  6. 6.383.2 × 100 =
  7. 7.43.84 × 10 =
  8. 8.8.32 ÷ 100 =
  9. 9.6.11 × 100 =
  10. 10.17.31 × 10 =
  11. 11.15.94 × 10 =
  12. 12.67.5 ÷ 10 =
  13. 13.27.13 × 10 =
  14. 14.34.82 ÷ 100 =
  15. 15.125.7 × 1000 =
  16. 16.0.61 ÷ 100 =
  17. 17.21.66 ÷ 10 =
  18. 18.80.1 × 100 =
  19. 19.6.41 × 1000 =
  20. 20.16.85 ÷ 100 =
  21. 21.41.55 × 10 =
  22. 22.9.04 ÷ 1000 =
  23. 23.255.3 × 1000 =
  24. 24.25.36 × 10 =
  25. 25.449.6 × 100 =
  26. 26.24.3 × 10 =
  27. 27.361.2 × 100 =
  28. 28.102.5 ÷ 10 =
  29. 29.13.88 × 10 =
  30. 30.217.7 × 10 =
  31. 31.453.8 × 10 =
  32. 32.39.79 × 100 =
  33. 33.204.2 ÷ 10 =
  34. 34.47.04 ÷ 10 =
  35. 35.6.29 × 10 =
  36. 36.426.9 × 100 =
  37. 37.181.4 × 100 =
  38. 38.11.49 × 10 =
  39. 39.147.2 × 10 =
  40. 40.33.7 ÷ 100 =

Answer key

  1. 1260
  2. 216
  3. 6060
  4. 2.843
  5. 39.5
  6. 38320
  7. 438.4
  8. 0.0832
  9. 611
  10. 173.1
  11. 159.4
  12. 6.75
  13. 271.3
  14. 0.3482
  15. 125700
  16. 0.0061
  17. 2.166
  18. 8010
  19. 6410
  20. 0.1685
  21. 415.5
  22. 0.00904
  23. 255300
  24. 253.6
  25. 44960
  26. 243
  27. 36120
  28. 10.25
  29. 138.8
  30. 2177
  31. 4538
  32. 3979
  33. 20.42
  34. 4.704
  35. 62.9
  36. 42690
  37. 18140
  38. 114.9
  39. 1472
  40. 0.337

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