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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 899 · 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. 1.56.4 × 10 =
  2. 2.83.1 × 10 =
  3. 3.283.1 ÷ 10 =
  4. 4.19.42 ÷ 1000 =
  5. 5.287.9 ÷ 1000 =
  6. 6.398.4 ÷ 10 =
  7. 7.162.5 × 100 =
  8. 8.43.34 ÷ 10 =
  9. 9.464.5 × 10 =
  10. 10.194.7 × 10 =
  11. 11.89.8 × 100 =
  12. 12.480.6 × 1000 =
  13. 13.196.6 × 10 =
  14. 14.3.58 × 1000 =
  15. 15.51.4 ÷ 100 =
  16. 16.24.18 ÷ 100 =
  17. 17.14.53 × 10 =
  18. 18.227.3 × 10 =
  19. 19.36.11 ÷ 1000 =
  20. 20.13.09 ÷ 10 =
  21. 21.10.59 ÷ 1000 =
  22. 22.489.1 ÷ 1000 =
  23. 23.127.7 × 10 =
  24. 24.39.56 × 100 =
  25. 25.12.38 × 10 =
  26. 26.428.5 × 10 =
  27. 27.440.1 × 1000 =
  28. 28.137.8 × 1000 =
  29. 29.9.58 ÷ 10 =
  30. 30.222.5 ÷ 10 =
  31. 31.107.1 ÷ 1000 =
  32. 32.47.84 × 1000 =
  33. 33.468.4 × 10 =
  34. 34.276.4 × 100 =
  35. 35.1.86 × 10 =
  36. 36.32.2 × 100 =
  37. 37.7.64 × 1000 =
  38. 38.421.2 × 100 =
  39. 39.246.3 × 1000 =
  40. 40.8.3 × 1000 =

Answer key

  1. 564
  2. 831
  3. 28.31
  4. 0.01942
  5. 0.2879
  6. 39.84
  7. 16250
  8. 4.334
  9. 4645
  10. 1947
  11. 8980
  12. 480600
  13. 1966
  14. 3580
  15. 0.514
  16. 0.2418
  17. 145.3
  18. 2273
  19. 0.03611
  20. 1.309
  21. 0.01059
  22. 0.4891
  23. 1277
  24. 3956
  25. 123.8
  26. 4285
  27. 440100
  28. 137800
  29. 0.958
  30. 22.25
  31. 0.1071
  32. 47840
  33. 4684
  34. 27640
  35. 18.6
  36. 3220
  37. 7640
  38. 42120
  39. 246300
  40. 8300

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