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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 569 · 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. 1.394.4 × 10 =
  2. 2.27.6 × 100 =
  3. 3.6.46 × 100 =
  4. 4.300.1 × 10 =
  5. 5.42.24 ÷ 10 =
  6. 6.387.8 × 100 =
  7. 7.113.2 × 100 =
  8. 8.384.5 × 10 =
  9. 9.2.48 ÷ 100 =
  10. 10.432.5 × 1000 =
  11. 11.2.91 ÷ 100 =
  12. 12.13.51 ÷ 100 =
  13. 13.361.8 × 10 =
  14. 14.47.89 ÷ 1000 =
  15. 15.16.14 × 1000 =
  16. 16.56.5 × 100 =
  17. 17.281.4 × 100 =
  18. 18.155.3 × 100 =
  19. 19.25.84 × 1000 =
  20. 20.380.1 ÷ 1000 =
  21. 21.48.56 ÷ 10 =
  22. 22.30.96 × 1000 =
  23. 23.24.09 ÷ 100 =
  24. 24.110.1 × 1000 =
  25. 25.456.9 × 100 =
  26. 26.22.82 ÷ 100 =
  27. 27.20.59 × 1000 =
  28. 28.41.4 ÷ 100 =
  29. 29.10.78 × 10 =
  30. 30.34.35 × 10 =
  31. 31.16.4 ÷ 1000 =
  32. 32.43.01 × 10 =
  33. 33.18.23 ÷ 100 =
  34. 34.18.12 × 10 =
  35. 35.15.51 × 1000 =
  36. 36.227.7 ÷ 1000 =
  37. 37.23.59 ÷ 10 =
  38. 38.378.5 ÷ 1000 =
  39. 39.219.1 ÷ 1000 =
  40. 40.19.96 ÷ 1000 =

Answer key

  1. 3944
  2. 2760
  3. 646
  4. 3001
  5. 4.224
  6. 38780
  7. 11320
  8. 3845
  9. 0.0248
  10. 432500
  11. 0.0291
  12. 0.1351
  13. 3618
  14. 0.04789
  15. 16140
  16. 5650
  17. 28140
  18. 15530
  19. 25840
  20. 0.3801
  21. 4.856
  22. 30960
  23. 0.2409
  24. 110100
  25. 45690
  26. 0.2282
  27. 20590
  28. 0.414
  29. 107.8
  30. 343.5
  31. 0.0164
  32. 430.1
  33. 0.1823
  34. 181.2
  35. 15510
  36. 0.2277
  37. 2.359
  38. 0.3785
  39. 0.2191
  40. 0.01996

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