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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 355 · 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. 1.362.1 × 10 =
  2. 2.32.6 × 10 =
  3. 3.441.5 ÷ 1000 =
  4. 4.25.31 × 1000 =
  5. 5.116.1 × 1000 =
  6. 6.46.07 × 1000 =
  7. 7.14.75 × 100 =
  8. 8.19.87 × 100 =
  9. 9.1.39 × 10 =
  10. 10.45.37 ÷ 10 =
  11. 11.8.29 ÷ 1000 =
  12. 12.20.81 ÷ 100 =
  13. 13.409.7 × 100 =
  14. 14.36.76 × 100 =
  15. 15.76.9 ÷ 10 =
  16. 16.6.34 × 100 =
  17. 17.186.7 ÷ 10 =
  18. 18.322.7 ÷ 100 =
  19. 19.308.1 × 1000 =
  20. 20.290.6 × 100 =
  21. 21.152.3 × 10 =
  22. 22.424.2 × 10 =
  23. 23.2.68 × 100 =
  24. 24.32.62 × 10 =
  25. 25.474.2 × 10 =
  26. 26.45.4 ÷ 100 =
  27. 27.25.68 ÷ 1000 =
  28. 28.2.07 ÷ 100 =
  29. 29.433.5 ÷ 10 =
  30. 30.2.68 ÷ 100 =
  31. 31.30.71 × 100 =
  32. 32.30.5 ÷ 100 =
  33. 33.312.8 ÷ 100 =
  34. 34.40.75 × 100 =
  35. 35.304.2 × 10 =
  36. 36.45.97 ÷ 10 =
  37. 37.36.49 ÷ 10 =
  38. 38.438.6 ÷ 10 =
  39. 39.18.58 ÷ 10 =
  40. 40.49.73 × 100 =

Answer key

  1. 3621
  2. 326
  3. 0.4415
  4. 25310
  5. 116100
  6. 46070
  7. 1475
  8. 1987
  9. 13.9
  10. 4.537
  11. 0.00829
  12. 0.2081
  13. 40970
  14. 3676
  15. 7.69
  16. 634
  17. 18.67
  18. 3.227
  19. 308100
  20. 29060
  21. 1523
  22. 4242
  23. 268
  24. 326.2
  25. 4742
  26. 0.454
  27. 0.02568
  28. 0.0207
  29. 43.35
  30. 0.0268
  31. 3071
  32. 0.305
  33. 3.128
  34. 4075
  35. 3042
  36. 4.597
  37. 3.649
  38. 43.86
  39. 1.858
  40. 4973

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