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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 130 · 40 questions
TalentJR

How it works (Double and halve): Find the number ending in 5 and the even number. Double the one ending in 5; halve the even one. Repeat while it helps (25 → 50 → 100), then multiply.

NameDateTime takenScore ___ / 40
  1. 1.38 × 75 =
  2. 2.12 × 125 =
  3. 3.12 × 75 =
  4. 4.75 × 30 =
  5. 5.15 × 38 =
  6. 6.12 × 35 =
  7. 7.45 × 18 =
  8. 8.55 × 38 =
  9. 9.24 × 25 =
  10. 10.30 × 35 =
  11. 11.25 × 6 =
  12. 12.24 × 45 =
  13. 13.40 × 65 =
  14. 14.12 × 25 =
  15. 15.55 × 34 =
  16. 16.25 × 32 =
  17. 17.24 × 55 =
  18. 18.20 × 75 =
  19. 19.15 × 40 =
  20. 20.30 × 45 =
  21. 21.24 × 15 =
  22. 22.55 × 16 =
  23. 23.25 × 8 =
  24. 24.15 × 40 =
  25. 25.45 × 20 =
  26. 26.25 × 14 =
  27. 27.34 × 45 =
  28. 28.36 × 75 =
  29. 29.15 × 22 =
  30. 30.20 × 15 =
  31. 31.12 × 25 =
  32. 32.20 × 15 =
  33. 33.15 × 24 =
  34. 34.125 × 34 =
  35. 35.28 × 35 =
  36. 36.45 × 30 =
  37. 37.32 × 125 =
  38. 38.12 × 25 =
  39. 39.15 × 16 =
  40. 40.10 × 15 =

Answer key

  1. 2850
  2. 1500
  3. 900
  4. 2250
  5. 570
  6. 420
  7. 810
  8. 2090
  9. 600
  10. 1050
  11. 150
  12. 1080
  13. 2600
  14. 300
  15. 1870
  16. 800
  17. 1320
  18. 1500
  19. 600
  20. 1350
  21. 360
  22. 880
  23. 200
  24. 600
  25. 900
  26. 350
  27. 1530
  28. 2700
  29. 330
  30. 300
  31. 300
  32. 300
  33. 360
  34. 4250
  35. 980
  36. 1350
  37. 4000
  38. 300
  39. 240
  40. 150

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