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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 444 · 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. 1.12.87 × 100 =
  2. 2.258.9 ÷ 10 =
  3. 3.378.4 ÷ 1000 =
  4. 4.474.5 × 1000 =
  5. 5.69.5 ÷ 1000 =
  6. 6.23.3 × 100 =
  7. 7.321.7 × 10 =
  8. 8.372.1 ÷ 100 =
  9. 9.76.7 ÷ 1000 =
  10. 10.18.27 ÷ 10 =
  11. 11.35.3 ÷ 10 =
  12. 12.81.1 ÷ 10 =
  13. 13.267.4 × 100 =
  14. 14.33.8 ÷ 10 =
  15. 15.4.55 ÷ 100 =
  16. 16.4.41 × 100 =
  17. 17.423.3 × 10 =
  18. 18.31.39 × 100 =
  19. 19.24.22 × 100 =
  20. 20.455.8 ÷ 100 =
  21. 21.36.67 ÷ 10 =
  22. 22.8.21 ÷ 1000 =
  23. 23.23.41 ÷ 1000 =
  24. 24.335.7 × 10 =
  25. 25.319.3 × 10 =
  26. 26.19.71 ÷ 10 =
  27. 27.32.21 × 10 =
  28. 28.373.7 ÷ 100 =
  29. 29.15.03 ÷ 1000 =
  30. 30.370.1 ÷ 10 =
  31. 31.37.12 ÷ 1000 =
  32. 32.353.1 ÷ 10 =
  33. 33.401.9 × 10 =
  34. 34.260.8 ÷ 10 =
  35. 35.449.2 ÷ 10 =
  36. 36.13.91 × 1000 =
  37. 37.26.71 ÷ 100 =
  38. 38.165.1 ÷ 10 =
  39. 39.39.42 × 1000 =
  40. 40.29.92 × 100 =

Answer key

  1. 1287
  2. 25.89
  3. 0.3784
  4. 474500
  5. 0.0695
  6. 2330
  7. 3217
  8. 3.721
  9. 0.0767
  10. 1.827
  11. 3.53
  12. 8.11
  13. 26740
  14. 3.38
  15. 0.0455
  16. 441
  17. 4233
  18. 3139
  19. 2422
  20. 4.558
  21. 3.667
  22. 0.00821
  23. 0.02341
  24. 3357
  25. 3193
  26. 1.971
  27. 322.1
  28. 3.737
  29. 0.01503
  30. 37.01
  31. 0.03712
  32. 35.31
  33. 4019
  34. 26.08
  35. 44.92
  36. 13910
  37. 0.2671
  38. 16.51
  39. 39420
  40. 2992

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