← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 380 · 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. 1.15 × 28 =
  2. 2.35 × 16 =
  3. 3.32 × 25 =
  4. 4.16 × 45 =
  5. 5.35 × 26 =
  6. 6.14 × 55 =
  7. 7.34 × 25 =
  8. 8.30 × 125 =
  9. 9.26 × 35 =
  10. 10.125 × 38 =
  11. 11.65 × 36 =
  12. 12.35 × 8 =
  13. 13.18 × 15 =
  14. 14.32 × 25 =
  15. 15.65 × 34 =
  16. 16.25 × 8 =
  17. 17.18 × 15 =
  18. 18.36 × 35 =
  19. 19.36 × 15 =
  20. 20.65 × 10 =
  21. 21.8 × 75 =
  22. 22.14 × 75 =
  23. 23.10 × 35 =
  24. 24.36 × 75 =
  25. 25.75 × 8 =
  26. 26.65 × 10 =
  27. 27.40 × 15 =
  28. 28.22 × 35 =
  29. 29.25 × 24 =
  30. 30.38 × 35 =
  31. 31.55 × 20 =
  32. 32.40 × 15 =
  33. 33.20 × 15 =
  34. 34.22 × 125 =
  35. 35.55 × 36 =
  36. 36.75 × 38 =
  37. 37.18 × 65 =
  38. 38.12 × 45 =
  39. 39.8 × 65 =
  40. 40.125 × 34 =

Answer key

  1. 420
  2. 560
  3. 800
  4. 720
  5. 910
  6. 770
  7. 850
  8. 3750
  9. 910
  10. 4750
  11. 2340
  12. 280
  13. 270
  14. 800
  15. 2210
  16. 200
  17. 270
  18. 1260
  19. 540
  20. 650
  21. 600
  22. 1050
  23. 350
  24. 2700
  25. 600
  26. 650
  27. 600
  28. 770
  29. 600
  30. 1330
  31. 1100
  32. 600
  33. 300
  34. 2750
  35. 1980
  36. 2850
  37. 1170
  38. 540
  39. 520
  40. 4250

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