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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 822 · 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. 1.328.3 × 10 =
  2. 2.256.2 × 10 =
  3. 3.171.8 × 10 =
  4. 4.85.3 × 1000 =
  5. 5.465.6 ÷ 10 =
  6. 6.49.65 ÷ 100 =
  7. 7.6.1 × 10 =
  8. 8.3.57 × 10 =
  9. 9.21.28 × 10 =
  10. 10.92.2 ÷ 10 =
  11. 11.45.29 ÷ 10 =
  12. 12.265.1 × 100 =
  13. 13.49.83 ÷ 100 =
  14. 14.45.79 ÷ 10 =
  15. 15.480.2 × 10 =
  16. 16.357.1 ÷ 100 =
  17. 17.300.8 × 1000 =
  18. 18.34.03 × 100 =
  19. 19.499.3 ÷ 10 =
  20. 20.374.4 ÷ 100 =
  21. 21.32.83 × 100 =
  22. 22.340.1 × 100 =
  23. 23.44.51 ÷ 10 =
  24. 24.5.07 × 10 =
  25. 25.17.53 ÷ 10 =
  26. 26.288.7 × 1000 =
  27. 27.32.68 ÷ 10 =
  28. 28.195.3 × 1000 =
  29. 29.475.7 ÷ 10 =
  30. 30.309.5 ÷ 100 =
  31. 31.5.24 × 100 =
  32. 32.463.6 × 100 =
  33. 33.360.6 ÷ 100 =
  34. 34.3.68 ÷ 10 =
  35. 35.412.4 × 10 =
  36. 36.10.84 ÷ 100 =
  37. 37.13.3 × 10 =
  38. 38.10.83 ÷ 100 =
  39. 39.15.58 × 1000 =
  40. 40.7.17 × 100 =

Answer key

  1. 3283
  2. 2562
  3. 1718
  4. 85300
  5. 46.56
  6. 0.4965
  7. 61
  8. 35.7
  9. 212.8
  10. 9.22
  11. 4.529
  12. 26510
  13. 0.4983
  14. 4.579
  15. 4802
  16. 3.571
  17. 300800
  18. 3403
  19. 49.93
  20. 3.744
  21. 3283
  22. 34010
  23. 4.451
  24. 50.7
  25. 1.753
  26. 288700
  27. 3.268
  28. 195300
  29. 47.57
  30. 3.095
  31. 524
  32. 46360
  33. 3.606
  34. 0.368
  35. 4124
  36. 0.1084
  37. 133
  38. 0.1083
  39. 15580
  40. 717

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