← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 686 · 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. 1.45 × 16 =
  2. 2.125 × 14 =
  3. 3.55 × 14 =
  4. 4.45 × 30 =
  5. 5.36 × 125 =
  6. 6.24 × 15 =
  7. 7.36 × 125 =
  8. 8.8 × 125 =
  9. 9.24 × 65 =
  10. 10.10 × 15 =
  11. 11.45 × 30 =
  12. 12.65 × 32 =
  13. 13.16 × 75 =
  14. 14.15 × 6 =
  15. 15.34 × 25 =
  16. 16.38 × 15 =
  17. 17.32 × 55 =
  18. 18.30 × 125 =
  19. 19.65 × 20 =
  20. 20.125 × 24 =
  21. 21.10 × 65 =
  22. 22.25 × 8 =
  23. 23.14 × 35 =
  24. 24.15 × 28 =
  25. 25.35 × 6 =
  26. 26.6 × 15 =
  27. 27.25 × 10 =
  28. 28.65 × 30 =
  29. 29.25 × 20 =
  30. 30.55 × 10 =
  31. 31.65 × 32 =
  32. 32.65 × 26 =
  33. 33.16 × 45 =
  34. 34.45 × 8 =
  35. 35.125 × 32 =
  36. 36.25 × 38 =
  37. 37.45 × 32 =
  38. 38.34 × 65 =
  39. 39.36 × 35 =
  40. 40.75 × 10 =

Answer key

  1. 720
  2. 1750
  3. 770
  4. 1350
  5. 4500
  6. 360
  7. 4500
  8. 1000
  9. 1560
  10. 150
  11. 1350
  12. 2080
  13. 1200
  14. 90
  15. 850
  16. 570
  17. 1760
  18. 3750
  19. 1300
  20. 3000
  21. 650
  22. 200
  23. 490
  24. 420
  25. 210
  26. 90
  27. 250
  28. 1950
  29. 500
  30. 550
  31. 2080
  32. 1690
  33. 720
  34. 360
  35. 4000
  36. 950
  37. 1440
  38. 2210
  39. 1260
  40. 750

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