← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 153 · 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. 1.26 × 75 =
  2. 2.25 × 6 =
  3. 3.8 × 125 =
  4. 4.35 × 40 =
  5. 5.6 × 55 =
  6. 6.125 × 36 =
  7. 7.8 × 75 =
  8. 8.15 × 24 =
  9. 9.45 × 24 =
  10. 10.45 × 8 =
  11. 11.28 × 15 =
  12. 12.34 × 65 =
  13. 13.32 × 15 =
  14. 14.65 × 26 =
  15. 15.28 × 35 =
  16. 16.8 × 15 =
  17. 17.24 × 25 =
  18. 18.18 × 35 =
  19. 19.15 × 30 =
  20. 20.6 × 55 =
  21. 21.36 × 45 =
  22. 22.8 × 75 =
  23. 23.38 × 35 =
  24. 24.55 × 26 =
  25. 25.45 × 14 =
  26. 26.15 × 10 =
  27. 27.14 × 125 =
  28. 28.12 × 45 =
  29. 29.12 × 15 =
  30. 30.45 × 32 =
  31. 31.18 × 35 =
  32. 32.12 × 35 =
  33. 33.15 × 16 =
  34. 34.34 × 45 =
  35. 35.32 × 75 =
  36. 36.75 × 36 =
  37. 37.34 × 15 =
  38. 38.25 × 40 =
  39. 39.16 × 35 =
  40. 40.22 × 35 =

Answer key

  1. 1950
  2. 150
  3. 1000
  4. 1400
  5. 330
  6. 4500
  7. 600
  8. 360
  9. 1080
  10. 360
  11. 420
  12. 2210
  13. 480
  14. 1690
  15. 980
  16. 120
  17. 600
  18. 630
  19. 450
  20. 330
  21. 1620
  22. 600
  23. 1330
  24. 1430
  25. 630
  26. 150
  27. 1750
  28. 540
  29. 180
  30. 1440
  31. 630
  32. 420
  33. 240
  34. 1530
  35. 2400
  36. 2700
  37. 510
  38. 1000
  39. 560
  40. 770

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