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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 456 · 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. 1.15 × 16 =
  2. 2.25 × 8 =
  3. 3.125 × 16 =
  4. 4.15 × 40 =
  5. 5.18 × 15 =
  6. 6.25 × 6 =
  7. 7.55 × 30 =
  8. 8.35 × 10 =
  9. 9.45 × 14 =
  10. 10.125 × 8 =
  11. 11.12 × 15 =
  12. 12.10 × 65 =
  13. 13.24 × 35 =
  14. 14.75 × 6 =
  15. 15.15 × 6 =
  16. 16.28 × 15 =
  17. 17.38 × 45 =
  18. 18.75 × 18 =
  19. 19.25 × 20 =
  20. 20.35 × 10 =
  21. 21.35 × 12 =
  22. 22.15 × 6 =
  23. 23.65 × 28 =
  24. 24.38 × 75 =
  25. 25.65 × 40 =
  26. 26.18 × 15 =
  27. 27.35 × 40 =
  28. 28.36 × 15 =
  29. 29.65 × 6 =
  30. 30.20 × 55 =
  31. 31.45 × 38 =
  32. 32.65 × 36 =
  33. 33.55 × 14 =
  34. 34.14 × 35 =
  35. 35.40 × 35 =
  36. 36.25 × 6 =
  37. 37.75 × 12 =
  38. 38.65 × 32 =
  39. 39.22 × 35 =
  40. 40.14 × 75 =

Answer key

  1. 240
  2. 200
  3. 2000
  4. 600
  5. 270
  6. 150
  7. 1650
  8. 350
  9. 630
  10. 1000
  11. 180
  12. 650
  13. 840
  14. 450
  15. 90
  16. 420
  17. 1710
  18. 1350
  19. 500
  20. 350
  21. 420
  22. 90
  23. 1820
  24. 2850
  25. 2600
  26. 270
  27. 1400
  28. 540
  29. 390
  30. 1100
  31. 1710
  32. 2340
  33. 770
  34. 490
  35. 1400
  36. 150
  37. 900
  38. 2080
  39. 770
  40. 1050

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