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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 515 · 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. 1.472.2 ÷ 100 =
  2. 2.348.8 × 10 =
  3. 3.188.1 × 10 =
  4. 4.201.5 ÷ 10 =
  5. 5.183.4 × 100 =
  6. 6.70.6 ÷ 10 =
  7. 7.34.57 ÷ 10 =
  8. 8.213.3 ÷ 100 =
  9. 9.6.05 ÷ 100 =
  10. 10.39.73 ÷ 1000 =
  11. 11.438.8 ÷ 1000 =
  12. 12.1.64 × 1000 =
  13. 13.355.7 ÷ 10 =
  14. 14.24.41 × 100 =
  15. 15.32.41 × 100 =
  16. 16.12.01 ÷ 1000 =
  17. 17.445.4 × 10 =
  18. 18.68.9 × 10 =
  19. 19.358.1 × 10 =
  20. 20.42.91 ÷ 1000 =
  21. 21.38.77 ÷ 10 =
  22. 22.223.1 × 10 =
  23. 23.72.3 ÷ 1000 =
  24. 24.402.3 ÷ 1000 =
  25. 25.15.51 ÷ 10 =
  26. 26.11.39 ÷ 1000 =
  27. 27.8.1 ÷ 10 =
  28. 28.219.1 × 10 =
  29. 29.1.09 ÷ 1000 =
  30. 30.15.2 ÷ 100 =
  31. 31.17.47 × 1000 =
  32. 32.18.1 ÷ 1000 =
  33. 33.40.58 ÷ 1000 =
  34. 34.10.58 ÷ 100 =
  35. 35.359.5 × 10 =
  36. 36.342.2 × 10 =
  37. 37.15.22 ÷ 10 =
  38. 38.13.96 × 10 =
  39. 39.285.5 ÷ 1000 =
  40. 40.29.06 × 10 =

Answer key

  1. 4.722
  2. 3488
  3. 1881
  4. 20.15
  5. 18340
  6. 7.06
  7. 3.457
  8. 2.133
  9. 0.0605
  10. 0.03973
  11. 0.4388
  12. 1640
  13. 35.57
  14. 2441
  15. 3241
  16. 0.01201
  17. 4454
  18. 689
  19. 3581
  20. 0.04291
  21. 3.877
  22. 2231
  23. 0.0723
  24. 0.4023
  25. 1.551
  26. 0.01139
  27. 0.81
  28. 2191
  29. 0.00109
  30. 0.152
  31. 17470
  32. 0.0181
  33. 0.04058
  34. 0.1058
  35. 3595
  36. 3422
  37. 1.522
  38. 139.6
  39. 0.2855
  40. 290.6

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