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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 299 · 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. 1.361.3 ÷ 100 =
  2. 2.29.44 × 10 =
  3. 3.407.1 ÷ 10 =
  4. 4.381.8 × 10 =
  5. 5.182.9 ÷ 100 =
  6. 6.387.1 ÷ 10 =
  7. 7.33.1 ÷ 100 =
  8. 8.432.6 × 100 =
  9. 9.25.28 ÷ 10 =
  10. 10.359.3 × 100 =
  11. 11.27.41 × 10 =
  12. 12.71.8 × 10 =
  13. 13.40.46 ÷ 10 =
  14. 14.44.1 ÷ 100 =
  15. 15.2.75 × 100 =
  16. 16.230.2 × 10 =
  17. 17.291.9 ÷ 10 =
  18. 18.18.21 × 10 =
  19. 19.7.81 × 10 =
  20. 20.398.5 × 10 =
  21. 21.356.7 ÷ 100 =
  22. 22.46.31 ÷ 10 =
  23. 23.11.07 ÷ 1000 =
  24. 24.12.21 ÷ 100 =
  25. 25.26.98 ÷ 10 =
  26. 26.48.01 ÷ 10 =
  27. 27.176.9 ÷ 10 =
  28. 28.11.12 ÷ 1000 =
  29. 29.39.89 × 1000 =
  30. 30.450.1 × 100 =
  31. 31.26.25 ÷ 1000 =
  32. 32.335.2 × 10 =
  33. 33.155.3 × 10 =
  34. 34.9.01 ÷ 1000 =
  35. 35.25.44 × 10 =
  36. 36.244.3 ÷ 10 =
  37. 37.17.45 ÷ 10 =
  38. 38.29.66 ÷ 100 =
  39. 39.20.05 ÷ 10 =
  40. 40.96.9 × 10 =

Answer key

  1. 3.613
  2. 294.4
  3. 40.71
  4. 3818
  5. 1.829
  6. 38.71
  7. 0.331
  8. 43260
  9. 2.528
  10. 35930
  11. 274.1
  12. 718
  13. 4.046
  14. 0.441
  15. 275
  16. 2302
  17. 29.19
  18. 182.1
  19. 78.1
  20. 3985
  21. 3.567
  22. 4.631
  23. 0.01107
  24. 0.1221
  25. 2.698
  26. 4.801
  27. 17.69
  28. 0.01112
  29. 39890
  30. 45010
  31. 0.02625
  32. 3352
  33. 1553
  34. 0.00901
  35. 254.4
  36. 24.43
  37. 1.745
  38. 0.2966
  39. 2.005
  40. 969

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