← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 237 · 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 × 14 =
  2. 2.125 × 38 =
  3. 3.75 × 40 =
  4. 4.65 × 8 =
  5. 5.8 × 125 =
  6. 6.38 × 35 =
  7. 7.6 × 65 =
  8. 8.36 × 25 =
  9. 9.25 × 20 =
  10. 10.75 × 16 =
  11. 11.45 × 8 =
  12. 12.28 × 55 =
  13. 13.125 × 36 =
  14. 14.14 × 125 =
  15. 15.75 × 38 =
  16. 16.14 × 75 =
  17. 17.45 × 38 =
  18. 18.125 × 34 =
  19. 19.32 × 65 =
  20. 20.25 × 8 =
  21. 21.45 × 16 =
  22. 22.8 × 45 =
  23. 23.15 × 8 =
  24. 24.25 × 10 =
  25. 25.45 × 10 =
  26. 26.65 × 12 =
  27. 27.6 × 55 =
  28. 28.6 × 45 =
  29. 29.14 × 25 =
  30. 30.20 × 65 =
  31. 31.45 × 20 =
  32. 32.25 × 6 =
  33. 33.125 × 32 =
  34. 34.35 × 12 =
  35. 35.25 × 22 =
  36. 36.36 × 25 =
  37. 37.45 × 6 =
  38. 38.14 × 55 =
  39. 39.18 × 55 =
  40. 40.75 × 28 =

Answer key

  1. 210
  2. 4750
  3. 3000
  4. 520
  5. 1000
  6. 1330
  7. 390
  8. 900
  9. 500
  10. 1200
  11. 360
  12. 1540
  13. 4500
  14. 1750
  15. 2850
  16. 1050
  17. 1710
  18. 4250
  19. 2080
  20. 200
  21. 720
  22. 360
  23. 120
  24. 250
  25. 450
  26. 780
  27. 330
  28. 270
  29. 350
  30. 1300
  31. 900
  32. 150
  33. 4000
  34. 420
  35. 550
  36. 900
  37. 270
  38. 770
  39. 990
  40. 2100

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