← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 452 · 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 × 16 =
  2. 2.45 × 8 =
  3. 3.125 × 10 =
  4. 4.14 × 125 =
  5. 5.14 × 15 =
  6. 6.12 × 45 =
  7. 7.125 × 12 =
  8. 8.15 × 28 =
  9. 9.38 × 125 =
  10. 10.6 × 125 =
  11. 11.6 × 25 =
  12. 12.16 × 45 =
  13. 13.75 × 36 =
  14. 14.25 × 16 =
  15. 15.38 × 125 =
  16. 16.75 × 34 =
  17. 17.55 × 20 =
  18. 18.16 × 15 =
  19. 19.55 × 40 =
  20. 20.18 × 65 =
  21. 21.15 × 6 =
  22. 22.40 × 25 =
  23. 23.55 × 40 =
  24. 24.35 × 40 =
  25. 25.22 × 25 =
  26. 26.14 × 45 =
  27. 27.40 × 15 =
  28. 28.16 × 125 =
  29. 29.26 × 65 =
  30. 30.15 × 30 =
  31. 31.40 × 75 =
  32. 32.34 × 15 =
  33. 33.35 × 16 =
  34. 34.16 × 35 =
  35. 35.45 × 34 =
  36. 36.25 × 6 =
  37. 37.14 × 125 =
  38. 38.65 × 20 =
  39. 39.14 × 65 =
  40. 40.55 × 18 =

Answer key

  1. 1200
  2. 360
  3. 1250
  4. 1750
  5. 210
  6. 540
  7. 1500
  8. 420
  9. 4750
  10. 750
  11. 150
  12. 720
  13. 2700
  14. 400
  15. 4750
  16. 2550
  17. 1100
  18. 240
  19. 2200
  20. 1170
  21. 90
  22. 1000
  23. 2200
  24. 1400
  25. 550
  26. 630
  27. 600
  28. 2000
  29. 1690
  30. 450
  31. 3000
  32. 510
  33. 560
  34. 560
  35. 1530
  36. 150
  37. 1750
  38. 1300
  39. 910
  40. 990

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