← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 422 · 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. 1.14 × 25 =
  2. 2.65 × 22 =
  3. 3.15 × 36 =
  4. 4.12 × 25 =
  5. 5.75 × 8 =
  6. 6.26 × 35 =
  7. 7.15 × 36 =
  8. 8.12 × 25 =
  9. 9.26 × 125 =
  10. 10.8 × 65 =
  11. 11.75 × 34 =
  12. 12.45 × 12 =
  13. 13.75 × 20 =
  14. 14.34 × 45 =
  15. 15.15 × 12 =
  16. 16.34 × 75 =
  17. 17.25 × 16 =
  18. 18.30 × 125 =
  19. 19.38 × 55 =
  20. 20.40 × 25 =
  21. 21.32 × 15 =
  22. 22.8 × 25 =
  23. 23.34 × 125 =
  24. 24.6 × 35 =
  25. 25.65 × 24 =
  26. 26.26 × 65 =
  27. 27.75 × 20 =
  28. 28.14 × 125 =
  29. 29.12 × 75 =
  30. 30.26 × 35 =
  31. 31.38 × 45 =
  32. 32.12 × 75 =
  33. 33.28 × 35 =
  34. 34.14 × 65 =
  35. 35.65 × 8 =
  36. 36.55 × 34 =
  37. 37.30 × 15 =
  38. 38.16 × 15 =
  39. 39.22 × 125 =
  40. 40.14 × 75 =

Answer key

  1. 350
  2. 1430
  3. 540
  4. 300
  5. 600
  6. 910
  7. 540
  8. 300
  9. 3250
  10. 520
  11. 2550
  12. 540
  13. 1500
  14. 1530
  15. 180
  16. 2550
  17. 400
  18. 3750
  19. 2090
  20. 1000
  21. 480
  22. 200
  23. 4250
  24. 210
  25. 1560
  26. 1690
  27. 1500
  28. 1750
  29. 900
  30. 910
  31. 1710
  32. 900
  33. 980
  34. 910
  35. 520
  36. 1870
  37. 450
  38. 240
  39. 2750
  40. 1050

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