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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 264 · 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. 2.22 × 125 =
  3. 3.55 × 6 =
  4. 4.65 × 20 =
  5. 5.15 × 16 =
  6. 6.75 × 22 =
  7. 7.14 × 25 =
  8. 8.34 × 75 =
  9. 9.75 × 40 =
  10. 10.45 × 24 =
  11. 11.36 × 75 =
  12. 12.25 × 8 =
  13. 13.16 × 45 =
  14. 14.35 × 38 =
  15. 15.15 × 34 =
  16. 16.45 × 8 =
  17. 17.24 × 25 =
  18. 18.125 × 36 =
  19. 19.40 × 45 =
  20. 20.125 × 26 =
  21. 21.12 × 15 =
  22. 22.125 × 32 =
  23. 23.28 × 65 =
  24. 24.36 × 65 =
  25. 25.24 × 55 =
  26. 26.22 × 125 =
  27. 27.26 × 15 =
  28. 28.40 × 45 =
  29. 29.6 × 45 =
  30. 30.15 × 10 =
  31. 31.45 × 12 =
  32. 32.15 × 26 =
  33. 33.18 × 75 =
  34. 34.24 × 25 =
  35. 35.55 × 20 =
  36. 36.18 × 65 =
  37. 37.125 × 32 =
  38. 38.35 × 38 =
  39. 39.25 × 38 =
  40. 40.65 × 14 =

Answer key

  1. 240
  2. 2750
  3. 330
  4. 1300
  5. 240
  6. 1650
  7. 350
  8. 2550
  9. 3000
  10. 1080
  11. 2700
  12. 200
  13. 720
  14. 1330
  15. 510
  16. 360
  17. 600
  18. 4500
  19. 1800
  20. 3250
  21. 180
  22. 4000
  23. 1820
  24. 2340
  25. 1320
  26. 2750
  27. 390
  28. 1800
  29. 270
  30. 150
  31. 540
  32. 390
  33. 1350
  34. 600
  35. 1100
  36. 1170
  37. 4000
  38. 1330
  39. 950
  40. 910

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