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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 321 · 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. 1.32.22 ÷ 100 =
  2. 2.19.59 ÷ 100 =
  3. 3.32.41 ÷ 1000 =
  4. 4.15.85 ÷ 100 =
  5. 5.38.26 ÷ 1000 =
  6. 6.137.8 ÷ 1000 =
  7. 7.27.02 ÷ 10 =
  8. 8.34.31 ÷ 100 =
  9. 9.392.8 ÷ 10 =
  10. 10.48.45 × 100 =
  11. 11.151.6 ÷ 1000 =
  12. 12.432.1 ÷ 10 =
  13. 13.6.81 × 100 =
  14. 14.490.3 × 100 =
  15. 15.446.1 × 100 =
  16. 16.32.69 × 100 =
  17. 17.25.8 ÷ 100 =
  18. 18.329.3 ÷ 10 =
  19. 19.300.4 × 100 =
  20. 20.17.28 × 10 =
  21. 21.425.7 ÷ 100 =
  22. 22.43.86 × 10 =
  23. 23.13.91 × 10 =
  24. 24.7.51 × 10 =
  25. 25.153.6 ÷ 10 =
  26. 26.52.5 ÷ 10 =
  27. 27.49.27 ÷ 10 =
  28. 28.29.17 × 10 =
  29. 29.269.6 ÷ 10 =
  30. 30.7.61 ÷ 10 =
  31. 31.465.3 × 1000 =
  32. 32.219.1 ÷ 10 =
  33. 33.2.99 ÷ 10 =
  34. 34.449.1 ÷ 1000 =
  35. 35.292.9 × 1000 =
  36. 36.5.16 × 100 =
  37. 37.34.92 ÷ 10 =
  38. 38.100.3 × 1000 =
  39. 39.46.31 × 1000 =
  40. 40.170.6 ÷ 10 =

Answer key

  1. 0.3222
  2. 0.1959
  3. 0.03241
  4. 0.1585
  5. 0.03826
  6. 0.1378
  7. 2.702
  8. 0.3431
  9. 39.28
  10. 4845
  11. 0.1516
  12. 43.21
  13. 681
  14. 49030
  15. 44610
  16. 3269
  17. 0.258
  18. 32.93
  19. 30040
  20. 172.8
  21. 4.257
  22. 438.6
  23. 139.1
  24. 75.1
  25. 15.36
  26. 5.25
  27. 4.927
  28. 291.7
  29. 26.96
  30. 0.761
  31. 465300
  32. 21.91
  33. 0.299
  34. 0.4491
  35. 292900
  36. 516
  37. 3.492
  38. 100300
  39. 46310
  40. 17.06

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