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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 10 · 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. 1.22 × 55 =
  2. 2.45 × 24 =
  3. 3.45 × 8 =
  4. 4.65 × 12 =
  5. 5.35 × 20 =
  6. 6.75 × 36 =
  7. 7.55 × 12 =
  8. 8.35 × 38 =
  9. 9.12 × 25 =
  10. 10.55 × 24 =
  11. 11.35 × 34 =
  12. 12.25 × 10 =
  13. 13.55 × 28 =
  14. 14.65 × 24 =
  15. 15.22 × 125 =
  16. 16.65 × 6 =
  17. 17.38 × 25 =
  18. 18.12 × 45 =
  19. 19.15 × 14 =
  20. 20.16 × 65 =
  21. 21.16 × 15 =
  22. 22.75 × 6 =
  23. 23.75 × 34 =
  24. 24.35 × 20 =
  25. 25.75 × 40 =
  26. 26.25 × 28 =
  27. 27.10 × 35 =
  28. 28.45 × 6 =
  29. 29.40 × 25 =
  30. 30.15 × 16 =
  31. 31.38 × 35 =
  32. 32.32 × 65 =
  33. 33.125 × 38 =
  34. 34.65 × 38 =
  35. 35.75 × 38 =
  36. 36.25 × 30 =
  37. 37.26 × 125 =
  38. 38.15 × 8 =
  39. 39.30 × 55 =
  40. 40.40 × 75 =

Answer key

  1. 1210
  2. 1080
  3. 360
  4. 780
  5. 700
  6. 2700
  7. 660
  8. 1330
  9. 300
  10. 1320
  11. 1190
  12. 250
  13. 1540
  14. 1560
  15. 2750
  16. 390
  17. 950
  18. 540
  19. 210
  20. 1040
  21. 240
  22. 450
  23. 2550
  24. 700
  25. 3000
  26. 700
  27. 350
  28. 270
  29. 1000
  30. 240
  31. 1330
  32. 2080
  33. 4750
  34. 2470
  35. 2850
  36. 750
  37. 3250
  38. 120
  39. 1650
  40. 3000

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