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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 632 · 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. 1.385.4 × 100 =
  2. 2.233.7 ÷ 100 =
  3. 3.430.3 ÷ 10 =
  4. 4.2.84 ÷ 1000 =
  5. 5.489.8 × 10 =
  6. 6.22.83 × 100 =
  7. 7.448.6 × 10 =
  8. 8.36.33 ÷ 10 =
  9. 9.471.8 × 100 =
  10. 10.5.44 × 10 =
  11. 11.498.2 × 10 =
  12. 12.37.39 ÷ 1000 =
  13. 13.482.4 × 10 =
  14. 14.17.15 × 10 =
  15. 15.401.5 × 10 =
  16. 16.41.2 ÷ 10 =
  17. 17.326.1 ÷ 1000 =
  18. 18.8.67 ÷ 1000 =
  19. 19.28.5 ÷ 100 =
  20. 20.1.29 × 1000 =
  21. 21.472.1 ÷ 10 =
  22. 22.212.4 × 100 =
  23. 23.277.9 ÷ 10 =
  24. 24.270.7 × 10 =
  25. 25.241.3 ÷ 1000 =
  26. 26.90.8 × 1000 =
  27. 27.8.83 × 100 =
  28. 28.395.1 ÷ 100 =
  29. 29.295.2 × 1000 =
  30. 30.28.36 ÷ 10 =
  31. 31.417.9 ÷ 100 =
  32. 32.24.13 ÷ 100 =
  33. 33.33.5 ÷ 1000 =
  34. 34.419.8 ÷ 10 =
  35. 35.264.2 × 10 =
  36. 36.34.21 ÷ 1000 =
  37. 37.184.8 × 1000 =
  38. 38.288.4 × 100 =
  39. 39.23.09 × 100 =
  40. 40.39.35 ÷ 10 =

Answer key

  1. 38540
  2. 2.337
  3. 43.03
  4. 0.00284
  5. 4898
  6. 2283
  7. 4486
  8. 3.633
  9. 47180
  10. 54.4
  11. 4982
  12. 0.03739
  13. 4824
  14. 171.5
  15. 4015
  16. 4.12
  17. 0.3261
  18. 0.00867
  19. 0.285
  20. 1290
  21. 47.21
  22. 21240
  23. 27.79
  24. 2707
  25. 0.2413
  26. 90800
  27. 883
  28. 3.951
  29. 295200
  30. 2.836
  31. 4.179
  32. 0.2413
  33. 0.0335
  34. 41.98
  35. 2642
  36. 0.03421
  37. 184800
  38. 28840
  39. 2309
  40. 3.935

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