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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 442 · 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. 1.38.07 ÷ 10 =
  2. 2.80.2 × 1000 =
  3. 3.41.3 × 100 =
  4. 4.156.1 × 1000 =
  5. 5.9.22 × 10 =
  6. 6.99.1 × 10 =
  7. 7.24.12 ÷ 100 =
  8. 8.344.3 ÷ 1000 =
  9. 9.36.14 × 100 =
  10. 10.13.63 × 10 =
  11. 11.3.88 ÷ 10 =
  12. 12.19.91 × 1000 =
  13. 13.106.4 × 100 =
  14. 14.43.12 × 10 =
  15. 15.255.5 × 100 =
  16. 16.40.4 ÷ 100 =
  17. 17.14.18 × 10 =
  18. 18.50.5 ÷ 10 =
  19. 19.4.96 ÷ 10 =
  20. 20.18.96 ÷ 10 =
  21. 21.339.5 × 10 =
  22. 22.13.79 ÷ 100 =
  23. 23.28.09 × 10 =
  24. 24.193.1 × 1000 =
  25. 25.14.75 × 100 =
  26. 26.367.5 ÷ 10 =
  27. 27.27.77 × 10 =
  28. 28.25.75 × 100 =
  29. 29.1.66 × 10 =
  30. 30.402.7 ÷ 10 =
  31. 31.1.45 ÷ 100 =
  32. 32.39.92 ÷ 10 =
  33. 33.337.4 ÷ 10 =
  34. 34.32.26 ÷ 1000 =
  35. 35.43.18 ÷ 100 =
  36. 36.7.27 ÷ 10 =
  37. 37.91.2 ÷ 10 =
  38. 38.410.4 × 100 =
  39. 39.190.3 ÷ 10 =
  40. 40.211.1 ÷ 10 =

Answer key

  1. 3.807
  2. 80200
  3. 4130
  4. 156100
  5. 92.2
  6. 991
  7. 0.2412
  8. 0.3443
  9. 3614
  10. 136.3
  11. 0.388
  12. 19910
  13. 10640
  14. 431.2
  15. 25550
  16. 0.404
  17. 141.8
  18. 5.05
  19. 0.496
  20. 1.896
  21. 3395
  22. 0.1379
  23. 280.9
  24. 193100
  25. 1475
  26. 36.75
  27. 277.7
  28. 2575
  29. 16.6
  30. 40.27
  31. 0.0145
  32. 3.992
  33. 33.74
  34. 0.03226
  35. 0.4318
  36. 0.727
  37. 9.12
  38. 41040
  39. 19.03
  40. 21.11

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