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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 119 · 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. 1.347.8 × 1000 =
  2. 2.365.1 ÷ 10 =
  3. 3.44.47 ÷ 10 =
  4. 4.2.01 × 1000 =
  5. 5.426.3 × 100 =
  6. 6.219.1 × 10 =
  7. 7.379.4 × 10 =
  8. 8.335.1 ÷ 100 =
  9. 9.263.3 × 100 =
  10. 10.37.31 × 1000 =
  11. 11.264.8 × 100 =
  12. 12.378.9 × 10 =
  13. 13.162.1 × 100 =
  14. 14.28.37 ÷ 10 =
  15. 15.181.7 × 1000 =
  16. 16.472.6 ÷ 1000 =
  17. 17.8.55 ÷ 1000 =
  18. 18.111.3 × 1000 =
  19. 19.48.85 × 10 =
  20. 20.6.67 × 100 =
  21. 21.275.1 × 1000 =
  22. 22.11.06 ÷ 1000 =
  23. 23.152.6 × 100 =
  24. 24.10.5 × 10 =
  25. 25.16.71 × 10 =
  26. 26.314.7 ÷ 1000 =
  27. 27.494.6 × 100 =
  28. 28.182.9 ÷ 10 =
  29. 29.27.26 × 100 =
  30. 30.291.5 × 1000 =
  31. 31.1.46 × 10 =
  32. 32.118.7 ÷ 10 =
  33. 33.18.79 × 10 =
  34. 34.251.9 ÷ 1000 =
  35. 35.44.42 ÷ 10 =
  36. 36.101.8 × 1000 =
  37. 37.215.1 × 1000 =
  38. 38.425.1 ÷ 100 =
  39. 39.32.23 ÷ 10 =
  40. 40.345.2 × 1000 =

Answer key

  1. 347800
  2. 36.51
  3. 4.447
  4. 2010
  5. 42630
  6. 2191
  7. 3794
  8. 3.351
  9. 26330
  10. 37310
  11. 26480
  12. 3789
  13. 16210
  14. 2.837
  15. 181700
  16. 0.4726
  17. 0.00855
  18. 111300
  19. 488.5
  20. 667
  21. 275100
  22. 0.01106
  23. 15260
  24. 105
  25. 167.1
  26. 0.3147
  27. 49460
  28. 18.29
  29. 2726
  30. 291500
  31. 14.6
  32. 11.87
  33. 187.9
  34. 0.2519
  35. 4.442
  36. 101800
  37. 215100
  38. 4.251
  39. 3.223
  40. 345200

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