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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 145 · 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. 1.408.9 ÷ 100 =
  2. 2.39.73 ÷ 100 =
  3. 3.361.9 ÷ 100 =
  4. 4.27.79 ÷ 100 =
  5. 5.190.3 ÷ 1000 =
  6. 6.23.98 ÷ 100 =
  7. 7.375.3 × 100 =
  8. 8.34.23 ÷ 10 =
  9. 9.12.59 × 10 =
  10. 10.4.51 ÷ 10 =
  11. 11.33.06 × 100 =
  12. 12.459.1 ÷ 1000 =
  13. 13.70.1 ÷ 100 =
  14. 14.11.11 ÷ 10 =
  15. 15.313.1 × 1000 =
  16. 16.113.6 ÷ 10 =
  17. 17.103.3 ÷ 1000 =
  18. 18.16.18 × 100 =
  19. 19.1.61 ÷ 100 =
  20. 20.17.57 × 100 =
  21. 21.278.2 ÷ 10 =
  22. 22.219.3 ÷ 10 =
  23. 23.399.3 × 100 =
  24. 24.21.4 × 100 =
  25. 25.22.23 × 10 =
  26. 26.11.51 × 100 =
  27. 27.58.3 ÷ 1000 =
  28. 28.60.4 ÷ 10 =
  29. 29.5.44 ÷ 100 =
  30. 30.43.87 × 1000 =
  31. 31.40.85 × 10 =
  32. 32.23.41 × 10 =
  33. 33.346.1 × 10 =
  34. 34.407.2 × 10 =
  35. 35.355.3 ÷ 100 =
  36. 36.40.22 × 10 =
  37. 37.65.1 × 10 =
  38. 38.8.01 × 100 =
  39. 39.454.5 × 10 =
  40. 40.44.03 × 1000 =

Answer key

  1. 4.089
  2. 0.3973
  3. 3.619
  4. 0.2779
  5. 0.1903
  6. 0.2398
  7. 37530
  8. 3.423
  9. 125.9
  10. 0.451
  11. 3306
  12. 0.4591
  13. 0.701
  14. 1.111
  15. 313100
  16. 11.36
  17. 0.1033
  18. 1618
  19. 0.0161
  20. 1757
  21. 27.82
  22. 21.93
  23. 39930
  24. 2140
  25. 222.3
  26. 1151
  27. 0.0583
  28. 6.04
  29. 0.0544
  30. 43870
  31. 408.5
  32. 234.1
  33. 3461
  34. 4072
  35. 3.553
  36. 402.2
  37. 651
  38. 801
  39. 4545
  40. 44030

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