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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 100 · 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. 1.13.76 × 100 =
  2. 2.4.63 ÷ 100 =
  3. 3.26.31 × 10 =
  4. 4.45.55 × 1000 =
  5. 5.28.29 × 1000 =
  6. 6.40.51 × 100 =
  7. 7.3.28 × 1000 =
  8. 8.338.1 ÷ 100 =
  9. 9.188.6 × 10 =
  10. 10.400.6 × 10 =
  11. 11.66.9 × 100 =
  12. 12.35.94 ÷ 100 =
  13. 13.498.1 × 10 =
  14. 14.280.4 ÷ 10 =
  15. 15.5.85 × 1000 =
  16. 16.32.79 × 1000 =
  17. 17.14.16 ÷ 10 =
  18. 18.15.03 × 100 =
  19. 19.320.3 × 10 =
  20. 20.367.2 × 10 =
  21. 21.36.91 × 100 =
  22. 22.180.3 ÷ 100 =
  23. 23.6.26 ÷ 10 =
  24. 24.242.6 × 1000 =
  25. 25.48.78 ÷ 100 =
  26. 26.31.9 × 1000 =
  27. 27.4.02 ÷ 100 =
  28. 28.104.4 ÷ 100 =
  29. 29.8.08 × 100 =
  30. 30.13.94 × 100 =
  31. 31.139.9 × 1000 =
  32. 32.15.05 ÷ 10 =
  33. 33.165.7 × 1000 =
  34. 34.1.06 ÷ 10 =
  35. 35.245.9 ÷ 1000 =
  36. 36.120.9 ÷ 1000 =
  37. 37.78.1 ÷ 10 =
  38. 38.301.7 × 10 =
  39. 39.0.13 × 100 =
  40. 40.268.5 × 100 =

Answer key

  1. 1376
  2. 0.0463
  3. 263.1
  4. 45550
  5. 28290
  6. 4051
  7. 3280
  8. 3.381
  9. 1886
  10. 4006
  11. 6690
  12. 0.3594
  13. 4981
  14. 28.04
  15. 5850
  16. 32790
  17. 1.416
  18. 1503
  19. 3203
  20. 3672
  21. 3691
  22. 1.803
  23. 0.626
  24. 242600
  25. 0.4878
  26. 31900
  27. 0.0402
  28. 1.044
  29. 808
  30. 1394
  31. 139900
  32. 1.505
  33. 165700
  34. 0.106
  35. 0.2459
  36. 0.1209
  37. 7.81
  38. 3017
  39. 13
  40. 26850

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