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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 425 · 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. 1.111.1 × 100 =
  2. 2.33.71 ÷ 1000 =
  3. 3.444.4 ÷ 100 =
  4. 4.10.1 × 1000 =
  5. 5.11.29 × 100 =
  6. 6.178.6 × 1000 =
  7. 7.190.4 ÷ 100 =
  8. 8.86.1 × 10 =
  9. 9.91.5 ÷ 1000 =
  10. 10.35.27 × 10 =
  11. 11.20.3 ÷ 10 =
  12. 12.36.74 ÷ 10 =
  13. 13.340.6 × 1000 =
  14. 14.133.7 × 1000 =
  15. 15.19.46 × 100 =
  16. 16.277.1 × 1000 =
  17. 17.24.81 × 100 =
  18. 18.18.18 × 10 =
  19. 19.43.18 ÷ 1000 =
  20. 20.147.9 × 100 =
  21. 21.16.45 ÷ 100 =
  22. 22.469.7 ÷ 100 =
  23. 23.30.56 ÷ 100 =
  24. 24.49.68 ÷ 10 =
  25. 25.329.9 ÷ 100 =
  26. 26.203.5 ÷ 1000 =
  27. 27.33.68 ÷ 1000 =
  28. 28.47.9 ÷ 1000 =
  29. 29.26.01 × 10 =
  30. 30.362.2 × 10 =
  31. 31.222.8 × 1000 =
  32. 32.41.37 ÷ 100 =
  33. 33.15.92 × 1000 =
  34. 34.149.8 ÷ 10 =
  35. 35.4.01 ÷ 10 =
  36. 36.102.1 × 10 =
  37. 37.72.5 × 10 =
  38. 38.32.63 ÷ 10 =
  39. 39.194.3 ÷ 100 =
  40. 40.233.3 × 10 =

Answer key

  1. 11110
  2. 0.03371
  3. 4.444
  4. 10100
  5. 1129
  6. 178600
  7. 1.904
  8. 861
  9. 0.0915
  10. 352.7
  11. 2.03
  12. 3.674
  13. 340600
  14. 133700
  15. 1946
  16. 277100
  17. 2481
  18. 181.8
  19. 0.04318
  20. 14790
  21. 0.1645
  22. 4.697
  23. 0.3056
  24. 4.968
  25. 3.299
  26. 0.2035
  27. 0.03368
  28. 0.0479
  29. 260.1
  30. 3622
  31. 222800
  32. 0.4137
  33. 15920
  34. 14.98
  35. 0.401
  36. 1021
  37. 725
  38. 3.263
  39. 1.943
  40. 2333

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