← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 276 · 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. 1.45 × 22 =
  2. 2.26 × 125 =
  3. 3.15 × 20 =
  4. 4.15 × 30 =
  5. 5.55 × 28 =
  6. 6.65 × 26 =
  7. 7.125 × 12 =
  8. 8.35 × 30 =
  9. 9.125 × 24 =
  10. 10.65 × 8 =
  11. 11.18 × 125 =
  12. 12.15 × 10 =
  13. 13.65 × 34 =
  14. 14.15 × 10 =
  15. 15.125 × 28 =
  16. 16.36 × 125 =
  17. 17.75 × 10 =
  18. 18.55 × 18 =
  19. 19.26 × 125 =
  20. 20.22 × 75 =
  21. 21.24 × 25 =
  22. 22.55 × 10 =
  23. 23.35 × 10 =
  24. 24.125 × 8 =
  25. 25.15 × 16 =
  26. 26.125 × 18 =
  27. 27.125 × 6 =
  28. 28.24 × 75 =
  29. 29.15 × 36 =
  30. 30.15 × 24 =
  31. 31.12 × 15 =
  32. 32.25 × 34 =
  33. 33.38 × 45 =
  34. 34.34 × 45 =
  35. 35.24 × 75 =
  36. 36.6 × 65 =
  37. 37.75 × 10 =
  38. 38.24 × 35 =
  39. 39.65 × 24 =
  40. 40.15 × 12 =

Answer key

  1. 990
  2. 3250
  3. 300
  4. 450
  5. 1540
  6. 1690
  7. 1500
  8. 1050
  9. 3000
  10. 520
  11. 2250
  12. 150
  13. 2210
  14. 150
  15. 3500
  16. 4500
  17. 750
  18. 990
  19. 3250
  20. 1650
  21. 600
  22. 550
  23. 350
  24. 1000
  25. 240
  26. 2250
  27. 750
  28. 1800
  29. 540
  30. 360
  31. 180
  32. 850
  33. 1710
  34. 1530
  35. 1800
  36. 390
  37. 750
  38. 840
  39. 1560
  40. 180

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