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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 155 · 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. 1.6.59 × 100 =
  2. 2.42.1 × 10 =
  3. 3.274.3 ÷ 1000 =
  4. 4.2.84 × 1000 =
  5. 5.13.39 × 100 =
  6. 6.95.9 ÷ 100 =
  7. 7.31.1 × 100 =
  8. 8.7.85 ÷ 1000 =
  9. 9.92.9 × 100 =
  10. 10.3.6 × 1000 =
  11. 11.13.51 × 1000 =
  12. 12.21.46 ÷ 100 =
  13. 13.32.07 ÷ 1000 =
  14. 14.17.4 × 100 =
  15. 15.26.31 × 1000 =
  16. 16.413.8 × 100 =
  17. 17.364.8 ÷ 1000 =
  18. 18.287.7 ÷ 1000 =
  19. 19.41.38 ÷ 10 =
  20. 20.99.9 ÷ 10 =
  21. 21.70.7 × 1000 =
  22. 22.29.57 × 100 =
  23. 23.27.66 × 100 =
  24. 24.42.32 × 100 =
  25. 25.131.3 × 100 =
  26. 26.28.14 ÷ 10 =
  27. 27.216.3 ÷ 100 =
  28. 28.41.35 × 1000 =
  29. 29.24.72 ÷ 100 =
  30. 30.14.43 × 10 =
  31. 31.316.2 × 1000 =
  32. 32.10.88 ÷ 10 =
  33. 33.144.4 × 1000 =
  34. 34.37.7 × 10 =
  35. 35.204.6 × 1000 =
  36. 36.45.94 ÷ 100 =
  37. 37.42.63 × 100 =
  38. 38.12.73 × 1000 =
  39. 39.4.69 × 1000 =
  40. 40.299.1 ÷ 100 =

Answer key

  1. 659
  2. 421
  3. 0.2743
  4. 2840
  5. 1339
  6. 0.959
  7. 3110
  8. 0.00785
  9. 9290
  10. 3600
  11. 13510
  12. 0.2146
  13. 0.03207
  14. 1740
  15. 26310
  16. 41380
  17. 0.3648
  18. 0.2877
  19. 4.138
  20. 9.99
  21. 70700
  22. 2957
  23. 2766
  24. 4232
  25. 13130
  26. 2.814
  27. 2.163
  28. 41350
  29. 0.2472
  30. 144.3
  31. 316200
  32. 1.088
  33. 144400
  34. 377
  35. 204600
  36. 0.4594
  37. 4263
  38. 12730
  39. 4690
  40. 2.991

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