← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 810 · 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. 1.38 × 35 =
  2. 2.36 × 15 =
  3. 3.10 × 45 =
  4. 4.55 × 24 =
  5. 5.65 × 12 =
  6. 6.26 × 75 =
  7. 7.20 × 75 =
  8. 8.20 × 55 =
  9. 9.36 × 55 =
  10. 10.10 × 35 =
  11. 11.55 × 28 =
  12. 12.45 × 10 =
  13. 13.15 × 34 =
  14. 14.12 × 15 =
  15. 15.28 × 75 =
  16. 16.55 × 22 =
  17. 17.30 × 15 =
  18. 18.55 × 6 =
  19. 19.20 × 45 =
  20. 20.65 × 20 =
  21. 21.12 × 125 =
  22. 22.28 × 25 =
  23. 23.15 × 10 =
  24. 24.35 × 12 =
  25. 25.28 × 45 =
  26. 26.15 × 24 =
  27. 27.125 × 6 =
  28. 28.35 × 30 =
  29. 29.6 × 45 =
  30. 30.34 × 15 =
  31. 31.10 × 25 =
  32. 32.40 × 65 =
  33. 33.15 × 18 =
  34. 34.35 × 8 =
  35. 35.16 × 25 =
  36. 36.12 × 25 =
  37. 37.55 × 26 =
  38. 38.32 × 75 =
  39. 39.15 × 34 =
  40. 40.12 × 45 =

Answer key

  1. 1330
  2. 540
  3. 450
  4. 1320
  5. 780
  6. 1950
  7. 1500
  8. 1100
  9. 1980
  10. 350
  11. 1540
  12. 450
  13. 510
  14. 180
  15. 2100
  16. 1210
  17. 450
  18. 330
  19. 900
  20. 1300
  21. 1500
  22. 700
  23. 150
  24. 420
  25. 1260
  26. 360
  27. 750
  28. 1050
  29. 270
  30. 510
  31. 250
  32. 2600
  33. 270
  34. 280
  35. 400
  36. 300
  37. 1430
  38. 2400
  39. 510
  40. 540

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