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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 747 · 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. 1.42.28 × 100 =
  2. 2.3.6 ÷ 1000 =
  3. 3.1.04 × 1000 =
  4. 4.36.41 ÷ 1000 =
  5. 5.32.99 ÷ 1000 =
  6. 6.309.8 ÷ 10 =
  7. 7.30.11 × 10 =
  8. 8.423.4 × 100 =
  9. 9.19.35 ÷ 10 =
  10. 10.300.4 × 10 =
  11. 11.82.5 × 100 =
  12. 12.397.8 ÷ 10 =
  13. 13.36.56 ÷ 10 =
  14. 14.24.21 ÷ 10 =
  15. 15.100.8 ÷ 100 =
  16. 16.13.48 × 1000 =
  17. 17.9.86 ÷ 10 =
  18. 18.371.2 × 100 =
  19. 19.117.8 × 10 =
  20. 20.2.34 × 100 =
  21. 21.359.6 ÷ 10 =
  22. 22.204.9 ÷ 10 =
  23. 23.30.17 × 1000 =
  24. 24.12.1 ÷ 100 =
  25. 25.10.09 ÷ 10 =
  26. 26.31.22 × 100 =
  27. 27.19.8 ÷ 10 =
  28. 28.399.2 ÷ 1000 =
  29. 29.164.3 ÷ 100 =
  30. 30.198.6 × 10 =
  31. 31.4.3 ÷ 100 =
  32. 32.446.4 ÷ 10 =
  33. 33.125.1 ÷ 100 =
  34. 34.35.41 ÷ 1000 =
  35. 35.25.25 × 100 =
  36. 36.22.38 × 10 =
  37. 37.27.39 ÷ 10 =
  38. 38.364.5 × 100 =
  39. 39.161.8 × 10 =
  40. 40.466.5 × 10 =

Answer key

  1. 4228
  2. 0.0036
  3. 1040
  4. 0.03641
  5. 0.03299
  6. 30.98
  7. 301.1
  8. 42340
  9. 1.935
  10. 3004
  11. 8250
  12. 39.78
  13. 3.656
  14. 2.421
  15. 1.008
  16. 13480
  17. 0.986
  18. 37120
  19. 1178
  20. 234
  21. 35.96
  22. 20.49
  23. 30170
  24. 0.121
  25. 1.009
  26. 3122
  27. 1.98
  28. 0.3992
  29. 1.643
  30. 1986
  31. 0.043
  32. 44.64
  33. 1.251
  34. 0.03541
  35. 2525
  36. 223.8
  37. 2.739
  38. 36450
  39. 1618
  40. 4665

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