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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 235 · 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. 1.32.69 × 100 =
  2. 2.1.32 × 10 =
  3. 3.46.43 ÷ 10 =
  4. 4.40.61 × 10 =
  5. 5.2.55 ÷ 100 =
  6. 6.149.9 × 100 =
  7. 7.82.6 × 1000 =
  8. 8.62.1 ÷ 1000 =
  9. 9.1.37 × 1000 =
  10. 10.1.11 ÷ 1000 =
  11. 11.26.21 ÷ 100 =
  12. 12.49.4 × 100 =
  13. 13.5.49 × 10 =
  14. 14.152.8 ÷ 10 =
  15. 15.10.07 × 100 =
  16. 16.42.95 × 10 =
  17. 17.20.43 × 100 =
  18. 18.237.7 × 100 =
  19. 19.452.7 ÷ 1000 =
  20. 20.388.2 × 10 =
  21. 21.30.92 ÷ 1000 =
  22. 22.327.8 ÷ 10 =
  23. 23.120.5 ÷ 10 =
  24. 24.72.9 × 10 =
  25. 25.333.2 ÷ 10 =
  26. 26.2.71 × 10 =
  27. 27.333.2 ÷ 10 =
  28. 28.435.4 × 10 =
  29. 29.40.89 ÷ 10 =
  30. 30.279.5 × 10 =
  31. 31.30.24 × 100 =
  32. 32.35.66 × 100 =
  33. 33.5.7 ÷ 100 =
  34. 34.1.68 × 10 =
  35. 35.262.8 ÷ 10 =
  36. 36.33.55 ÷ 10 =
  37. 37.43.01 ÷ 1000 =
  38. 38.49.64 × 10 =
  39. 39.2.06 ÷ 10 =
  40. 40.79.1 ÷ 100 =

Answer key

  1. 3269
  2. 13.2
  3. 4.643
  4. 406.1
  5. 0.0255
  6. 14990
  7. 82600
  8. 0.0621
  9. 1370
  10. 0.00111
  11. 0.2621
  12. 4940
  13. 54.9
  14. 15.28
  15. 1007
  16. 429.5
  17. 2043
  18. 23770
  19. 0.4527
  20. 3882
  21. 0.03092
  22. 32.78
  23. 12.05
  24. 729
  25. 33.32
  26. 27.1
  27. 33.32
  28. 4354
  29. 4.089
  30. 2795
  31. 3024
  32. 3566
  33. 0.057
  34. 16.8
  35. 26.28
  36. 3.355
  37. 0.04301
  38. 496.4
  39. 0.206
  40. 0.791

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