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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 520 · 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. 1.3.12 × 100 =
  2. 2.162.2 ÷ 10 =
  3. 3.10.57 ÷ 10 =
  4. 4.13.38 ÷ 1000 =
  5. 5.78.1 × 10 =
  6. 6.70.6 × 100 =
  7. 7.420.5 ÷ 10 =
  8. 8.13.43 × 100 =
  9. 9.451.8 × 1000 =
  10. 10.152.6 ÷ 1000 =
  11. 11.4.79 ÷ 10 =
  12. 12.8.73 ÷ 1000 =
  13. 13.474.7 ÷ 10 =
  14. 14.319.7 × 10 =
  15. 15.64.6 × 1000 =
  16. 16.100.2 × 10 =
  17. 17.309.4 × 100 =
  18. 18.404.9 × 100 =
  19. 19.5.21 × 10 =
  20. 20.138.1 ÷ 10 =
  21. 21.49.57 × 100 =
  22. 22.313.5 × 1000 =
  23. 23.33.39 ÷ 10 =
  24. 24.46.93 ÷ 100 =
  25. 25.122.1 × 10 =
  26. 26.19.65 × 10 =
  27. 27.12.67 × 10 =
  28. 28.441.7 × 1000 =
  29. 29.353.5 ÷ 1000 =
  30. 30.133.9 ÷ 1000 =
  31. 31.41.92 ÷ 10 =
  32. 32.50.1 × 10 =
  33. 33.5.8 × 10 =
  34. 34.0.94 × 10 =
  35. 35.15.92 × 100 =
  36. 36.373.9 × 1000 =
  37. 37.26.41 ÷ 10 =
  38. 38.12.77 × 10 =
  39. 39.30.22 × 100 =
  40. 40.343.5 ÷ 1000 =

Answer key

  1. 312
  2. 16.22
  3. 1.057
  4. 0.01338
  5. 781
  6. 7060
  7. 42.05
  8. 1343
  9. 451800
  10. 0.1526
  11. 0.479
  12. 0.00873
  13. 47.47
  14. 3197
  15. 64600
  16. 1002
  17. 30940
  18. 40490
  19. 52.1
  20. 13.81
  21. 4957
  22. 313500
  23. 3.339
  24. 0.4693
  25. 1221
  26. 196.5
  27. 126.7
  28. 441700
  29. 0.3535
  30. 0.1339
  31. 4.192
  32. 501
  33. 58
  34. 9.4
  35. 1592
  36. 373900
  37. 2.641
  38. 127.7
  39. 3022
  40. 0.3435

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