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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 161 · 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. 1.28.35 ÷ 100 =
  2. 2.43.93 ÷ 100 =
  3. 3.230.8 ÷ 1000 =
  4. 4.410.7 ÷ 10 =
  5. 5.43.57 × 10 =
  6. 6.41.7 × 1000 =
  7. 7.32.31 × 100 =
  8. 8.134.3 ÷ 100 =
  9. 9.226.4 × 1000 =
  10. 10.2.28 × 10 =
  11. 11.9.92 × 10 =
  12. 12.28.53 ÷ 10 =
  13. 13.29.2 × 10 =
  14. 14.64.8 ÷ 100 =
  15. 15.200.5 × 100 =
  16. 16.89.3 × 1000 =
  17. 17.5.38 × 10 =
  18. 18.25.31 × 10 =
  19. 19.330.3 ÷ 100 =
  20. 20.26.61 ÷ 100 =
  21. 21.0.21 × 100 =
  22. 22.52.9 × 10 =
  23. 23.282.3 ÷ 100 =
  24. 24.24.06 ÷ 10 =
  25. 25.387.7 ÷ 10 =
  26. 26.38.16 ÷ 1000 =
  27. 27.271.6 ÷ 10 =
  28. 28.29.56 × 10 =
  29. 29.272.2 ÷ 10 =
  30. 30.29.97 ÷ 10 =
  31. 31.47.36 ÷ 10 =
  32. 32.389.8 ÷ 1000 =
  33. 33.7.54 ÷ 1000 =
  34. 34.400.9 × 1000 =
  35. 35.87.1 × 100 =
  36. 36.194.5 ÷ 10 =
  37. 37.42.83 ÷ 100 =
  38. 38.115.6 × 100 =
  39. 39.23.51 ÷ 10 =
  40. 40.9.41 × 100 =

Answer key

  1. 0.2835
  2. 0.4393
  3. 0.2308
  4. 41.07
  5. 435.7
  6. 41700
  7. 3231
  8. 1.343
  9. 226400
  10. 22.8
  11. 99.2
  12. 2.853
  13. 292
  14. 0.648
  15. 20050
  16. 89300
  17. 53.8
  18. 253.1
  19. 3.303
  20. 0.2661
  21. 21
  22. 529
  23. 2.823
  24. 2.406
  25. 38.77
  26. 0.03816
  27. 27.16
  28. 295.6
  29. 27.22
  30. 2.997
  31. 4.736
  32. 0.3898
  33. 0.00754
  34. 400900
  35. 8710
  36. 19.45
  37. 0.4283
  38. 11560
  39. 2.351
  40. 941

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