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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 722 · 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. 1.30.11 × 100 =
  2. 2.30.15 × 10 =
  3. 3.25.92 ÷ 10 =
  4. 4.41.28 ÷ 10 =
  5. 5.133.2 ÷ 1000 =
  6. 6.225.9 × 100 =
  7. 7.30.84 × 10 =
  8. 8.99.6 ÷ 1000 =
  9. 9.75.1 × 10 =
  10. 10.62.1 × 100 =
  11. 11.29.91 ÷ 1000 =
  12. 12.18.5 × 10 =
  13. 13.447.9 ÷ 100 =
  14. 14.29.7 × 100 =
  15. 15.9.35 × 10 =
  16. 16.18.68 ÷ 1000 =
  17. 17.385.2 ÷ 100 =
  18. 18.48.24 ÷ 1000 =
  19. 19.40.19 ÷ 10 =
  20. 20.180.8 ÷ 1000 =
  21. 21.30.64 ÷ 1000 =
  22. 22.1.56 × 10 =
  23. 23.34.37 ÷ 100 =
  24. 24.6.41 × 1000 =
  25. 25.352.5 ÷ 10 =
  26. 26.14.57 ÷ 1000 =
  27. 27.312.5 ÷ 100 =
  28. 28.371.7 × 1000 =
  29. 29.335.7 × 100 =
  30. 30.13.51 ÷ 1000 =
  31. 31.272.1 × 100 =
  32. 32.236.6 ÷ 100 =
  33. 33.28.11 ÷ 100 =
  34. 34.315.7 ÷ 1000 =
  35. 35.293.1 ÷ 1000 =
  36. 36.25.8 × 1000 =
  37. 37.0.58 ÷ 100 =
  38. 38.224.9 × 1000 =
  39. 39.159.5 × 100 =
  40. 40.2.11 ÷ 1000 =

Answer key

  1. 3011
  2. 301.5
  3. 2.592
  4. 4.128
  5. 0.1332
  6. 22590
  7. 308.4
  8. 0.0996
  9. 751
  10. 6210
  11. 0.02991
  12. 185
  13. 4.479
  14. 2970
  15. 93.5
  16. 0.01868
  17. 3.852
  18. 0.04824
  19. 4.019
  20. 0.1808
  21. 0.03064
  22. 15.6
  23. 0.3437
  24. 6410
  25. 35.25
  26. 0.01457
  27. 3.125
  28. 371700
  29. 33570
  30. 0.01351
  31. 27210
  32. 2.366
  33. 0.2811
  34. 0.3157
  35. 0.2931
  36. 25800
  37. 0.0058
  38. 224900
  39. 15950
  40. 0.00211

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