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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 371 · 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. 1.144.1 × 10 =
  2. 2.18.02 ÷ 10 =
  3. 3.14.82 ÷ 100 =
  4. 4.11.89 ÷ 1000 =
  5. 5.1.6 ÷ 1000 =
  6. 6.24.24 × 100 =
  7. 7.26.8 ÷ 100 =
  8. 8.106.5 × 1000 =
  9. 9.388.6 ÷ 10 =
  10. 10.218.1 ÷ 10 =
  11. 11.24.81 ÷ 1000 =
  12. 12.34.26 ÷ 10 =
  13. 13.28.27 ÷ 100 =
  14. 14.333.8 × 10 =
  15. 15.0.32 ÷ 100 =
  16. 16.21.61 × 100 =
  17. 17.87.8 ÷ 10 =
  18. 18.344.1 × 10 =
  19. 19.3.74 × 10 =
  20. 20.12.97 × 100 =
  21. 21.22.79 × 10 =
  22. 22.297.5 ÷ 10 =
  23. 23.42.08 × 100 =
  24. 24.38.55 × 10 =
  25. 25.5.66 × 1000 =
  26. 26.179.6 ÷ 100 =
  27. 27.255.4 ÷ 10 =
  28. 28.40.94 × 1000 =
  29. 29.78.1 ÷ 10 =
  30. 30.145.8 ÷ 1000 =
  31. 31.9.99 × 100 =
  32. 32.166.5 × 1000 =
  33. 33.390.5 × 1000 =
  34. 34.382.5 × 100 =
  35. 35.22.54 ÷ 10 =
  36. 36.26.2 × 10 =
  37. 37.484.5 × 1000 =
  38. 38.137.4 × 10 =
  39. 39.238.8 ÷ 100 =
  40. 40.256.1 × 10 =

Answer key

  1. 1441
  2. 1.802
  3. 0.1482
  4. 0.01189
  5. 0.0016
  6. 2424
  7. 0.268
  8. 106500
  9. 38.86
  10. 21.81
  11. 0.02481
  12. 3.426
  13. 0.2827
  14. 3338
  15. 0.0032
  16. 2161
  17. 8.78
  18. 3441
  19. 37.4
  20. 1297
  21. 227.9
  22. 29.75
  23. 4208
  24. 385.5
  25. 5660
  26. 1.796
  27. 25.54
  28. 40940
  29. 7.81
  30. 0.1458
  31. 999
  32. 166500
  33. 390500
  34. 38250
  35. 2.254
  36. 262
  37. 484500
  38. 1374
  39. 2.388
  40. 2561

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