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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 61 · 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. 1.25 × 38 =
  2. 2.45 × 38 =
  3. 3.125 × 24 =
  4. 4.125 × 20 =
  5. 5.18 × 125 =
  6. 6.15 × 14 =
  7. 7.32 × 125 =
  8. 8.10 × 15 =
  9. 9.45 × 26 =
  10. 10.32 × 75 =
  11. 11.16 × 55 =
  12. 12.14 × 75 =
  13. 13.25 × 34 =
  14. 14.25 × 36 =
  15. 15.24 × 75 =
  16. 16.35 × 20 =
  17. 17.75 × 38 =
  18. 18.65 × 36 =
  19. 19.18 × 65 =
  20. 20.6 × 125 =
  21. 21.15 × 30 =
  22. 22.15 × 16 =
  23. 23.8 × 25 =
  24. 24.10 × 15 =
  25. 25.24 × 45 =
  26. 26.6 × 45 =
  27. 27.10 × 35 =
  28. 28.65 × 24 =
  29. 29.25 × 26 =
  30. 30.22 × 15 =
  31. 31.6 × 55 =
  32. 32.15 × 16 =
  33. 33.30 × 125 =
  34. 34.38 × 125 =
  35. 35.12 × 65 =
  36. 36.40 × 125 =
  37. 37.15 × 20 =
  38. 38.15 × 40 =
  39. 39.24 × 55 =
  40. 40.25 × 30 =

Answer key

  1. 950
  2. 1710
  3. 3000
  4. 2500
  5. 2250
  6. 210
  7. 4000
  8. 150
  9. 1170
  10. 2400
  11. 880
  12. 1050
  13. 850
  14. 900
  15. 1800
  16. 700
  17. 2850
  18. 2340
  19. 1170
  20. 750
  21. 450
  22. 240
  23. 200
  24. 150
  25. 1080
  26. 270
  27. 350
  28. 1560
  29. 650
  30. 330
  31. 330
  32. 240
  33. 3750
  34. 4750
  35. 780
  36. 5000
  37. 300
  38. 600
  39. 1320
  40. 750

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