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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 187 · 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. 1.5.34 × 100 =
  2. 2.10.89 ÷ 10 =
  3. 3.382.8 × 1000 =
  4. 4.179.4 ÷ 100 =
  5. 5.92.6 ÷ 10 =
  6. 6.83.3 × 10 =
  7. 7.25.41 ÷ 10 =
  8. 8.210.1 × 1000 =
  9. 9.2.36 × 1000 =
  10. 10.327.8 × 1000 =
  11. 11.347.7 ÷ 10 =
  12. 12.39.77 × 100 =
  13. 13.365.3 × 1000 =
  14. 14.497.8 ÷ 1000 =
  15. 15.83.6 × 10 =
  16. 16.27.84 ÷ 100 =
  17. 17.64.7 × 10 =
  18. 18.475.9 × 100 =
  19. 19.116.3 × 10 =
  20. 20.17.2 × 1000 =
  21. 21.213.7 × 100 =
  22. 22.27.6 × 1000 =
  23. 23.15.77 × 1000 =
  24. 24.22.69 ÷ 100 =
  25. 25.374.1 ÷ 1000 =
  26. 26.94.8 × 10 =
  27. 27.46.91 × 10 =
  28. 28.306.6 × 10 =
  29. 29.45.26 × 1000 =
  30. 30.26.28 ÷ 10 =
  31. 31.4.56 × 10 =
  32. 32.32.58 ÷ 1000 =
  33. 33.473.8 × 1000 =
  34. 34.8.67 × 10 =
  35. 35.278.5 × 1000 =
  36. 36.451.1 ÷ 10 =
  37. 37.8.83 × 100 =
  38. 38.11.29 ÷ 1000 =
  39. 39.27.91 × 100 =
  40. 40.343.9 ÷ 10 =

Answer key

  1. 534
  2. 1.089
  3. 382800
  4. 1.794
  5. 9.26
  6. 833
  7. 2.541
  8. 210100
  9. 2360
  10. 327800
  11. 34.77
  12. 3977
  13. 365300
  14. 0.4978
  15. 836
  16. 0.2784
  17. 647
  18. 47590
  19. 1163
  20. 17200
  21. 21370
  22. 27600
  23. 15770
  24. 0.2269
  25. 0.3741
  26. 948
  27. 469.1
  28. 3066
  29. 45260
  30. 2.628
  31. 45.6
  32. 0.03258
  33. 473800
  34. 86.7
  35. 278500
  36. 45.11
  37. 883
  38. 0.01129
  39. 2791
  40. 34.39

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