← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 382 · 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 × 16 =
  2. 2.12 × 35 =
  3. 3.14 × 125 =
  4. 4.35 × 18 =
  5. 5.40 × 35 =
  6. 6.22 × 35 =
  7. 7.25 × 6 =
  8. 8.22 × 65 =
  9. 9.35 × 24 =
  10. 10.10 × 125 =
  11. 11.20 × 45 =
  12. 12.35 × 28 =
  13. 13.55 × 18 =
  14. 14.8 × 25 =
  15. 15.15 × 24 =
  16. 16.35 × 8 =
  17. 17.15 × 38 =
  18. 18.35 × 40 =
  19. 19.75 × 26 =
  20. 20.26 × 45 =
  21. 21.18 × 35 =
  22. 22.75 × 8 =
  23. 23.125 × 36 =
  24. 24.65 × 10 =
  25. 25.35 × 32 =
  26. 26.35 × 16 =
  27. 27.6 × 125 =
  28. 28.32 × 45 =
  29. 29.26 × 45 =
  30. 30.25 × 12 =
  31. 31.65 × 6 =
  32. 32.35 × 40 =
  33. 33.28 × 65 =
  34. 34.30 × 25 =
  35. 35.55 × 12 =
  36. 36.38 × 45 =
  37. 37.25 × 38 =
  38. 38.55 × 10 =
  39. 39.16 × 45 =
  40. 40.75 × 40 =

Answer key

  1. 240
  2. 420
  3. 1750
  4. 630
  5. 1400
  6. 770
  7. 150
  8. 1430
  9. 840
  10. 1250
  11. 900
  12. 980
  13. 990
  14. 200
  15. 360
  16. 280
  17. 570
  18. 1400
  19. 1950
  20. 1170
  21. 630
  22. 600
  23. 4500
  24. 650
  25. 1120
  26. 560
  27. 750
  28. 1440
  29. 1170
  30. 300
  31. 390
  32. 1400
  33. 1820
  34. 750
  35. 660
  36. 1710
  37. 950
  38. 550
  39. 720
  40. 3000

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