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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 344 · 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. 1.18.18 × 10 =
  2. 2.12.53 × 10 =
  3. 3.5.69 × 1000 =
  4. 4.14.23 ÷ 10 =
  5. 5.22.08 ÷ 100 =
  6. 6.81.2 × 10 =
  7. 7.17.29 × 100 =
  8. 8.16.71 × 10 =
  9. 9.11.23 × 10 =
  10. 10.4.64 × 10 =
  11. 11.229.2 ÷ 1000 =
  12. 12.36.51 ÷ 10 =
  13. 13.316.1 ÷ 1000 =
  14. 14.169.7 × 100 =
  15. 15.47.65 × 10 =
  16. 16.415.1 × 100 =
  17. 17.44.43 × 100 =
  18. 18.424.3 × 100 =
  19. 19.7.24 × 10 =
  20. 20.28.64 × 10 =
  21. 21.13.33 ÷ 10 =
  22. 22.251.1 × 10 =
  23. 23.40.12 × 100 =
  24. 24.48.71 × 1000 =
  25. 25.14.66 ÷ 1000 =
  26. 26.464.3 ÷ 1000 =
  27. 27.14.88 × 10 =
  28. 28.151.1 × 10 =
  29. 29.40.11 × 10 =
  30. 30.8.71 ÷ 10 =
  31. 31.48.99 ÷ 100 =
  32. 32.22.07 × 10 =
  33. 33.15.5 ÷ 10 =
  34. 34.20.09 ÷ 100 =
  35. 35.12.43 × 1000 =
  36. 36.5.01 ÷ 100 =
  37. 37.198.4 ÷ 1000 =
  38. 38.70.1 × 100 =
  39. 39.317.2 × 100 =
  40. 40.265.8 × 10 =

Answer key

  1. 181.8
  2. 125.3
  3. 5690
  4. 1.423
  5. 0.2208
  6. 812
  7. 1729
  8. 167.1
  9. 112.3
  10. 46.4
  11. 0.2292
  12. 3.651
  13. 0.3161
  14. 16970
  15. 476.5
  16. 41510
  17. 4443
  18. 42430
  19. 72.4
  20. 286.4
  21. 1.333
  22. 2511
  23. 4012
  24. 48710
  25. 0.01466
  26. 0.4643
  27. 148.8
  28. 1511
  29. 401.1
  30. 0.871
  31. 0.4899
  32. 220.7
  33. 1.55
  34. 0.2009
  35. 12430
  36. 0.0501
  37. 0.1984
  38. 7010
  39. 31720
  40. 2658

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