← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 267 · 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. 1.36 × 25 =
  2. 2.45 × 26 =
  3. 3.6 × 35 =
  4. 4.55 × 8 =
  5. 5.38 × 65 =
  6. 6.18 × 45 =
  7. 7.24 × 65 =
  8. 8.14 × 125 =
  9. 9.26 × 55 =
  10. 10.10 × 125 =
  11. 11.6 × 55 =
  12. 12.15 × 16 =
  13. 13.25 × 36 =
  14. 14.75 × 8 =
  15. 15.18 × 125 =
  16. 16.15 × 34 =
  17. 17.75 × 24 =
  18. 18.75 × 14 =
  19. 19.16 × 15 =
  20. 20.38 × 55 =
  21. 21.125 × 28 =
  22. 22.24 × 15 =
  23. 23.125 × 40 =
  24. 24.15 × 20 =
  25. 25.32 × 125 =
  26. 26.25 × 34 =
  27. 27.8 × 55 =
  28. 28.36 × 35 =
  29. 29.35 × 34 =
  30. 30.24 × 55 =
  31. 31.55 × 6 =
  32. 32.55 × 20 =
  33. 33.12 × 35 =
  34. 34.18 × 45 =
  35. 35.8 × 25 =
  36. 36.35 × 22 =
  37. 37.65 × 12 =
  38. 38.12 × 125 =
  39. 39.8 × 125 =
  40. 40.34 × 35 =

Answer key

  1. 900
  2. 1170
  3. 210
  4. 440
  5. 2470
  6. 810
  7. 1560
  8. 1750
  9. 1430
  10. 1250
  11. 330
  12. 240
  13. 900
  14. 600
  15. 2250
  16. 510
  17. 1800
  18. 1050
  19. 240
  20. 2090
  21. 3500
  22. 360
  23. 5000
  24. 300
  25. 4000
  26. 850
  27. 440
  28. 1260
  29. 1190
  30. 1320
  31. 330
  32. 1100
  33. 420
  34. 810
  35. 200
  36. 770
  37. 780
  38. 1500
  39. 1000
  40. 1190

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