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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 348 · 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. 1.407.2 × 100 =
  2. 2.25.39 × 10 =
  3. 3.213.7 ÷ 1000 =
  4. 4.97.3 × 100 =
  5. 5.4.8 × 100 =
  6. 6.32.57 × 100 =
  7. 7.43.35 × 100 =
  8. 8.88.6 × 100 =
  9. 9.33.61 ÷ 1000 =
  10. 10.113.8 × 10 =
  11. 11.5.75 ÷ 10 =
  12. 12.377.9 × 1000 =
  13. 13.12.34 × 1000 =
  14. 14.48.21 ÷ 1000 =
  15. 15.253.4 × 100 =
  16. 16.121.7 ÷ 10 =
  17. 17.17.2 × 100 =
  18. 18.62.1 × 100 =
  19. 19.30.44 ÷ 1000 =
  20. 20.10.47 × 100 =
  21. 21.18.85 ÷ 1000 =
  22. 22.32.21 × 100 =
  23. 23.326.1 × 1000 =
  24. 24.8.8 ÷ 10 =
  25. 25.19.38 ÷ 1000 =
  26. 26.195.4 × 100 =
  27. 27.481.3 ÷ 100 =
  28. 28.22.41 × 1000 =
  29. 29.29.52 × 1000 =
  30. 30.302.7 ÷ 10 =
  31. 31.156.4 ÷ 1000 =
  32. 32.182.2 × 100 =
  33. 33.259.1 × 100 =
  34. 34.345.3 × 1000 =
  35. 35.8.53 × 10 =
  36. 36.423.6 ÷ 10 =
  37. 37.42.1 × 10 =
  38. 38.392.1 × 100 =
  39. 39.144.5 × 100 =
  40. 40.157.3 × 100 =

Answer key

  1. 40720
  2. 253.9
  3. 0.2137
  4. 9730
  5. 480
  6. 3257
  7. 4335
  8. 8860
  9. 0.03361
  10. 1138
  11. 0.575
  12. 377900
  13. 12340
  14. 0.04821
  15. 25340
  16. 12.17
  17. 1720
  18. 6210
  19. 0.03044
  20. 1047
  21. 0.01885
  22. 3221
  23. 326100
  24. 0.88
  25. 0.01938
  26. 19540
  27. 4.813
  28. 22410
  29. 29520
  30. 30.27
  31. 0.1564
  32. 18220
  33. 25910
  34. 345300
  35. 85.3
  36. 42.36
  37. 421
  38. 39210
  39. 14450
  40. 15730

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