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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 894 · 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. 1.9.64 × 1000 =
  2. 2.139.1 × 1000 =
  3. 3.166.1 ÷ 10 =
  4. 4.313.9 × 1000 =
  5. 5.385.3 × 10 =
  6. 6.43.11 ÷ 100 =
  7. 7.65.8 × 10 =
  8. 8.93.2 × 100 =
  9. 9.13.32 × 100 =
  10. 10.141.1 ÷ 1000 =
  11. 11.23.47 ÷ 10 =
  12. 12.32.09 ÷ 10 =
  13. 13.5.18 ÷ 1000 =
  14. 14.22.59 ÷ 1000 =
  15. 15.0.51 ÷ 10 =
  16. 16.45.34 × 100 =
  17. 17.6.54 ÷ 100 =
  18. 18.1.96 ÷ 10 =
  19. 19.242.2 ÷ 1000 =
  20. 20.367.2 × 10 =
  21. 21.74.9 × 100 =
  22. 22.37.49 ÷ 100 =
  23. 23.2.43 ÷ 10 =
  24. 24.40.1 ÷ 10 =
  25. 25.466.2 × 1000 =
  26. 26.495.7 ÷ 10 =
  27. 27.36.87 × 10 =
  28. 28.361.4 × 100 =
  29. 29.49.94 × 100 =
  30. 30.5.91 ÷ 100 =
  31. 31.462.6 × 10 =
  32. 32.464.7 × 100 =
  33. 33.95.4 × 1000 =
  34. 34.393.9 ÷ 100 =
  35. 35.399.7 × 1000 =
  36. 36.278.1 ÷ 1000 =
  37. 37.269.6 × 1000 =
  38. 38.42.84 ÷ 1000 =
  39. 39.439.6 × 100 =
  40. 40.213.7 × 100 =

Answer key

  1. 9640
  2. 139100
  3. 16.61
  4. 313900
  5. 3853
  6. 0.4311
  7. 658
  8. 9320
  9. 1332
  10. 0.1411
  11. 2.347
  12. 3.209
  13. 0.00518
  14. 0.02259
  15. 0.051
  16. 4534
  17. 0.0654
  18. 0.196
  19. 0.2422
  20. 3672
  21. 7490
  22. 0.3749
  23. 0.243
  24. 4.01
  25. 466200
  26. 49.57
  27. 368.7
  28. 36140
  29. 4994
  30. 0.0591
  31. 4626
  32. 46470
  33. 95400
  34. 3.939
  35. 399700
  36. 0.2781
  37. 269600
  38. 0.04284
  39. 43960
  40. 21370

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