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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 435 · 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. 1.242.9 × 10 =
  2. 2.268.6 ÷ 100 =
  3. 3.2.01 ÷ 1000 =
  4. 4.97.8 × 100 =
  5. 5.15.12 × 100 =
  6. 6.30.21 × 10 =
  7. 7.0.61 × 10 =
  8. 8.57.7 × 10 =
  9. 9.21.37 ÷ 1000 =
  10. 10.29.23 ÷ 1000 =
  11. 11.322.7 ÷ 1000 =
  12. 12.59.2 × 1000 =
  13. 13.29.81 ÷ 100 =
  14. 14.344.4 × 100 =
  15. 15.39.97 ÷ 10 =
  16. 16.0.63 × 10 =
  17. 17.19.41 ÷ 100 =
  18. 18.38.44 × 1000 =
  19. 19.49.67 × 1000 =
  20. 20.12.51 ÷ 10 =
  21. 21.129.9 × 10 =
  22. 22.16.63 ÷ 100 =
  23. 23.303.3 × 10 =
  24. 24.382.3 ÷ 100 =
  25. 25.407.6 × 1000 =
  26. 26.335.3 ÷ 10 =
  27. 27.39.7 ÷ 100 =
  28. 28.261.4 × 100 =
  29. 29.23.13 ÷ 1000 =
  30. 30.14.3 ÷ 10 =
  31. 31.72.9 ÷ 100 =
  32. 32.17.01 ÷ 10 =
  33. 33.44.2 × 1000 =
  34. 34.59.8 × 10 =
  35. 35.17.2 × 1000 =
  36. 36.330.6 × 1000 =
  37. 37.25.84 ÷ 100 =
  38. 38.69.7 ÷ 10 =
  39. 39.21.71 ÷ 10 =
  40. 40.434.9 × 100 =

Answer key

  1. 2429
  2. 2.686
  3. 0.00201
  4. 9780
  5. 1512
  6. 302.1
  7. 6.1
  8. 577
  9. 0.02137
  10. 0.02923
  11. 0.3227
  12. 59200
  13. 0.2981
  14. 34440
  15. 3.997
  16. 6.3
  17. 0.1941
  18. 38440
  19. 49670
  20. 1.251
  21. 1299
  22. 0.1663
  23. 3033
  24. 3.823
  25. 407600
  26. 33.53
  27. 0.397
  28. 26140
  29. 0.02313
  30. 1.43
  31. 0.729
  32. 1.701
  33. 44200
  34. 598
  35. 17200
  36. 330600
  37. 0.2584
  38. 6.97
  39. 2.171
  40. 43490

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