← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 314 · 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 × 6 =
  2. 2.55 × 18 =
  3. 3.40 × 25 =
  4. 4.38 × 125 =
  5. 5.40 × 25 =
  6. 6.8 × 75 =
  7. 7.15 × 24 =
  8. 8.38 × 45 =
  9. 9.6 × 55 =
  10. 10.25 × 14 =
  11. 11.15 × 12 =
  12. 12.15 × 32 =
  13. 13.25 × 14 =
  14. 14.18 × 35 =
  15. 15.55 × 20 =
  16. 16.25 × 34 =
  17. 17.75 × 10 =
  18. 18.35 × 24 =
  19. 19.10 × 75 =
  20. 20.10 × 65 =
  21. 21.15 × 38 =
  22. 22.25 × 12 =
  23. 23.25 × 36 =
  24. 24.16 × 125 =
  25. 25.36 × 125 =
  26. 26.38 × 35 =
  27. 27.8 × 65 =
  28. 28.28 × 65 =
  29. 29.24 × 125 =
  30. 30.10 × 25 =
  31. 31.25 × 8 =
  32. 32.45 × 40 =
  33. 33.16 × 125 =
  34. 34.75 × 18 =
  35. 35.25 × 6 =
  36. 36.22 × 45 =
  37. 37.35 × 36 =
  38. 38.28 × 25 =
  39. 39.35 × 10 =
  40. 40.15 × 18 =

Answer key

  1. 150
  2. 990
  3. 1000
  4. 4750
  5. 1000
  6. 600
  7. 360
  8. 1710
  9. 330
  10. 350
  11. 180
  12. 480
  13. 350
  14. 630
  15. 1100
  16. 850
  17. 750
  18. 840
  19. 750
  20. 650
  21. 570
  22. 300
  23. 900
  24. 2000
  25. 4500
  26. 1330
  27. 520
  28. 1820
  29. 3000
  30. 250
  31. 200
  32. 1800
  33. 2000
  34. 1350
  35. 150
  36. 990
  37. 1260
  38. 700
  39. 350
  40. 270

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