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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 120 · 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. 1.32.7 × 100 =
  2. 2.65.5 × 1000 =
  3. 3.250.1 ÷ 100 =
  4. 4.9.3 × 100 =
  5. 5.30.08 × 100 =
  6. 6.11.64 × 100 =
  7. 7.32.44 ÷ 100 =
  8. 8.327.7 ÷ 100 =
  9. 9.42.7 ÷ 100 =
  10. 10.170.1 × 100 =
  11. 11.26.86 × 10 =
  12. 12.290.1 ÷ 1000 =
  13. 13.87.8 × 10 =
  14. 14.19.89 × 10 =
  15. 15.21.88 × 10 =
  16. 16.344.3 × 10 =
  17. 17.194.8 ÷ 1000 =
  18. 18.48.21 × 10 =
  19. 19.4.57 ÷ 10 =
  20. 20.31.1 × 1000 =
  21. 21.42.62 ÷ 10 =
  22. 22.8.72 × 10 =
  23. 23.496.4 ÷ 100 =
  24. 24.255.7 × 100 =
  25. 25.11.62 × 1000 =
  26. 26.57.3 × 100 =
  27. 27.8.73 ÷ 10 =
  28. 28.443.1 ÷ 10 =
  29. 29.30.61 × 1000 =
  30. 30.149.1 × 100 =
  31. 31.114.5 ÷ 100 =
  32. 32.26.04 × 100 =
  33. 33.15.5 × 1000 =
  34. 34.213.2 ÷ 10 =
  35. 35.378.1 ÷ 1000 =
  36. 36.357.8 ÷ 100 =
  37. 37.453.4 × 100 =
  38. 38.46.26 ÷ 1000 =
  39. 39.38.05 ÷ 10 =
  40. 40.6.18 × 100 =

Answer key

  1. 3270
  2. 65500
  3. 2.501
  4. 930
  5. 3008
  6. 1164
  7. 0.3244
  8. 3.277
  9. 0.427
  10. 17010
  11. 268.6
  12. 0.2901
  13. 878
  14. 198.9
  15. 218.8
  16. 3443
  17. 0.1948
  18. 482.1
  19. 0.457
  20. 31100
  21. 4.262
  22. 87.2
  23. 4.964
  24. 25570
  25. 11620
  26. 5730
  27. 0.873
  28. 44.31
  29. 30610
  30. 14910
  31. 1.145
  32. 2604
  33. 15500
  34. 21.32
  35. 0.3781
  36. 3.578
  37. 45340
  38. 0.04626
  39. 3.805
  40. 618

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