← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 795 · 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 × 32 =
  2. 2.45 × 40 =
  3. 3.28 × 55 =
  4. 4.65 × 14 =
  5. 5.6 × 15 =
  6. 6.125 × 14 =
  7. 7.125 × 40 =
  8. 8.24 × 125 =
  9. 9.6 × 75 =
  10. 10.25 × 14 =
  11. 11.75 × 30 =
  12. 12.26 × 125 =
  13. 13.36 × 55 =
  14. 14.45 × 24 =
  15. 15.28 × 55 =
  16. 16.55 × 24 =
  17. 17.6 × 125 =
  18. 18.34 × 65 =
  19. 19.24 × 25 =
  20. 20.55 × 34 =
  21. 21.45 × 36 =
  22. 22.10 × 65 =
  23. 23.34 × 15 =
  24. 24.55 × 14 =
  25. 25.45 × 6 =
  26. 26.34 × 75 =
  27. 27.10 × 15 =
  28. 28.38 × 25 =
  29. 29.14 × 25 =
  30. 30.25 × 36 =
  31. 31.24 × 25 =
  32. 32.75 × 28 =
  33. 33.30 × 65 =
  34. 34.22 × 45 =
  35. 35.65 × 24 =
  36. 36.45 × 30 =
  37. 37.35 × 32 =
  38. 38.40 × 125 =
  39. 39.45 × 36 =
  40. 40.75 × 22 =

Answer key

  1. 1440
  2. 1800
  3. 1540
  4. 910
  5. 90
  6. 1750
  7. 5000
  8. 3000
  9. 450
  10. 350
  11. 2250
  12. 3250
  13. 1980
  14. 1080
  15. 1540
  16. 1320
  17. 750
  18. 2210
  19. 600
  20. 1870
  21. 1620
  22. 650
  23. 510
  24. 770
  25. 270
  26. 2550
  27. 150
  28. 950
  29. 350
  30. 900
  31. 600
  32. 2100
  33. 1950
  34. 990
  35. 1560
  36. 1350
  37. 1120
  38. 5000
  39. 1620
  40. 1650

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