← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 43 · 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. 1.75 × 6 =
  2. 2.15 × 10 =
  3. 3.25 × 34 =
  4. 4.75 × 30 =
  5. 5.40 × 25 =
  6. 6.15 × 40 =
  7. 7.45 × 38 =
  8. 8.55 × 10 =
  9. 9.15 × 20 =
  10. 10.15 × 14 =
  11. 11.8 × 45 =
  12. 12.15 × 14 =
  13. 13.25 × 32 =
  14. 14.65 × 12 =
  15. 15.65 × 32 =
  16. 16.15 × 24 =
  17. 17.75 × 18 =
  18. 18.65 × 14 =
  19. 19.45 × 10 =
  20. 20.18 × 125 =
  21. 21.40 × 25 =
  22. 22.16 × 15 =
  23. 23.65 × 36 =
  24. 24.12 × 55 =
  25. 25.25 × 40 =
  26. 26.10 × 55 =
  27. 27.14 × 125 =
  28. 28.40 × 55 =
  29. 29.6 × 65 =
  30. 30.125 × 22 =
  31. 31.45 × 14 =
  32. 32.125 × 18 =
  33. 33.35 × 8 =
  34. 34.35 × 6 =
  35. 35.75 × 24 =
  36. 36.25 × 8 =
  37. 37.15 × 10 =
  38. 38.15 × 24 =
  39. 39.12 × 25 =
  40. 40.35 × 12 =

Answer key

  1. 450
  2. 150
  3. 850
  4. 2250
  5. 1000
  6. 600
  7. 1710
  8. 550
  9. 300
  10. 210
  11. 360
  12. 210
  13. 800
  14. 780
  15. 2080
  16. 360
  17. 1350
  18. 910
  19. 450
  20. 2250
  21. 1000
  22. 240
  23. 2340
  24. 660
  25. 1000
  26. 550
  27. 1750
  28. 2200
  29. 390
  30. 2750
  31. 630
  32. 2250
  33. 280
  34. 210
  35. 1800
  36. 200
  37. 150
  38. 360
  39. 300
  40. 420

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