← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 868 · 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. 1.55 × 6 =
  2. 2.65 × 12 =
  3. 3.45 × 32 =
  4. 4.20 × 35 =
  5. 5.18 × 15 =
  6. 6.14 × 25 =
  7. 7.22 × 35 =
  8. 8.28 × 125 =
  9. 9.45 × 8 =
  10. 10.25 × 34 =
  11. 11.55 × 20 =
  12. 12.75 × 16 =
  13. 13.45 × 40 =
  14. 14.15 × 28 =
  15. 15.18 × 65 =
  16. 16.15 × 10 =
  17. 17.26 × 25 =
  18. 18.32 × 35 =
  19. 19.8 × 55 =
  20. 20.30 × 55 =
  21. 21.35 × 12 =
  22. 22.125 × 40 =
  23. 23.34 × 25 =
  24. 24.14 × 35 =
  25. 25.25 × 14 =
  26. 26.28 × 45 =
  27. 27.20 × 65 =
  28. 28.45 × 14 =
  29. 29.14 × 65 =
  30. 30.125 × 32 =
  31. 31.36 × 25 =
  32. 32.35 × 24 =
  33. 33.25 × 12 =
  34. 34.34 × 15 =
  35. 35.15 × 20 =
  36. 36.6 × 125 =
  37. 37.125 × 38 =
  38. 38.18 × 15 =
  39. 39.25 × 16 =
  40. 40.28 × 15 =

Answer key

  1. 330
  2. 780
  3. 1440
  4. 700
  5. 270
  6. 350
  7. 770
  8. 3500
  9. 360
  10. 850
  11. 1100
  12. 1200
  13. 1800
  14. 420
  15. 1170
  16. 150
  17. 650
  18. 1120
  19. 440
  20. 1650
  21. 420
  22. 5000
  23. 850
  24. 490
  25. 350
  26. 1260
  27. 1300
  28. 630
  29. 910
  30. 4000
  31. 900
  32. 840
  33. 300
  34. 510
  35. 300
  36. 750
  37. 4750
  38. 270
  39. 400
  40. 420

Free tables & multiplication lessons, practice and worksheets at talentjr.in/multiplication-tables