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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 311 · 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. 1.74.3 ÷ 10 =
  2. 2.12.64 ÷ 1000 =
  3. 3.371.7 ÷ 10 =
  4. 4.183.1 ÷ 10 =
  5. 5.151.6 ÷ 100 =
  6. 6.25.1 ÷ 10 =
  7. 7.355.9 × 1000 =
  8. 8.42.29 × 1000 =
  9. 9.376.7 ÷ 100 =
  10. 10.6.58 × 100 =
  11. 11.70.7 × 100 =
  12. 12.16.01 × 1000 =
  13. 13.415.1 × 10 =
  14. 14.207.9 ÷ 100 =
  15. 15.499.1 ÷ 1000 =
  16. 16.92.7 ÷ 10 =
  17. 17.30.74 × 10 =
  18. 18.37.98 ÷ 10 =
  19. 19.0.59 × 100 =
  20. 20.103.6 ÷ 100 =
  21. 21.94.1 × 100 =
  22. 22.45.7 ÷ 1000 =
  23. 23.9.68 × 10 =
  24. 24.345.2 ÷ 10 =
  25. 25.1.68 ÷ 100 =
  26. 26.345.4 ÷ 100 =
  27. 27.14.76 ÷ 10 =
  28. 28.152.7 × 1000 =
  29. 29.48.4 ÷ 10 =
  30. 30.11.09 × 1000 =
  31. 31.36.19 × 1000 =
  32. 32.92.9 × 1000 =
  33. 33.335.8 × 10 =
  34. 34.60.4 ÷ 100 =
  35. 35.398.7 × 1000 =
  36. 36.369.1 ÷ 1000 =
  37. 37.48.48 × 100 =
  38. 38.490.1 × 100 =
  39. 39.49.6 × 10 =
  40. 40.323.2 ÷ 1000 =

Answer key

  1. 7.43
  2. 0.01264
  3. 37.17
  4. 18.31
  5. 1.516
  6. 2.51
  7. 355900
  8. 42290
  9. 3.767
  10. 658
  11. 7070
  12. 16010
  13. 4151
  14. 2.079
  15. 0.4991
  16. 9.27
  17. 307.4
  18. 3.798
  19. 59
  20. 1.036
  21. 9410
  22. 0.0457
  23. 96.8
  24. 34.52
  25. 0.0168
  26. 3.454
  27. 1.476
  28. 152700
  29. 4.84
  30. 11090
  31. 36190
  32. 92900
  33. 3358
  34. 0.604
  35. 398700
  36. 0.3691
  37. 4848
  38. 49010
  39. 496
  40. 0.3232

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