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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 181 · 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. 1.18.75 × 1000 =
  2. 2.4.56 × 100 =
  3. 3.35.4 × 10 =
  4. 4.284.4 × 10 =
  5. 5.320.4 ÷ 10 =
  6. 6.69.1 × 10 =
  7. 7.9.1 × 10 =
  8. 8.1.79 × 10 =
  9. 9.92.5 × 10 =
  10. 10.20.83 × 100 =
  11. 11.338.1 ÷ 10 =
  12. 12.2.41 ÷ 1000 =
  13. 13.456.7 ÷ 10 =
  14. 14.7.76 ÷ 1000 =
  15. 15.33.59 ÷ 1000 =
  16. 16.0.11 × 10 =
  17. 17.2.6 × 100 =
  18. 18.94.4 × 100 =
  19. 19.42.63 ÷ 100 =
  20. 20.357.7 × 100 =
  21. 21.428.1 × 100 =
  22. 22.2.62 ÷ 100 =
  23. 23.341.6 ÷ 100 =
  24. 24.29.1 × 100 =
  25. 25.401.6 ÷ 10 =
  26. 26.39.08 ÷ 10 =
  27. 27.22.78 × 100 =
  28. 28.89.8 × 10 =
  29. 29.13.66 ÷ 1000 =
  30. 30.335.4 × 10 =
  31. 31.2.46 ÷ 1000 =
  32. 32.23.88 ÷ 1000 =
  33. 33.24.64 ÷ 10 =
  34. 34.37.49 × 1000 =
  35. 35.382.8 ÷ 1000 =
  36. 36.20.12 ÷ 10 =
  37. 37.33.42 × 10 =
  38. 38.34.5 ÷ 10 =
  39. 39.1.42 ÷ 10 =
  40. 40.28.27 × 1000 =

Answer key

  1. 18750
  2. 456
  3. 354
  4. 2844
  5. 32.04
  6. 691
  7. 91
  8. 17.9
  9. 925
  10. 2083
  11. 33.81
  12. 0.00241
  13. 45.67
  14. 0.00776
  15. 0.03359
  16. 1.1
  17. 260
  18. 9440
  19. 0.4263
  20. 35770
  21. 42810
  22. 0.0262
  23. 3.416
  24. 2910
  25. 40.16
  26. 3.908
  27. 2278
  28. 898
  29. 0.01366
  30. 3354
  31. 0.00246
  32. 0.02388
  33. 2.464
  34. 37490
  35. 0.3828
  36. 2.012
  37. 334.2
  38. 3.45
  39. 0.142
  40. 28270

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