← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 935 · 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. 1.20 × 25 =
  2. 2.16 × 35 =
  3. 3.55 × 22 =
  4. 4.16 × 65 =
  5. 5.55 × 12 =
  6. 6.75 × 30 =
  7. 7.125 × 8 =
  8. 8.40 × 15 =
  9. 9.32 × 15 =
  10. 10.26 × 65 =
  11. 11.25 × 34 =
  12. 12.45 × 6 =
  13. 13.45 × 12 =
  14. 14.45 × 20 =
  15. 15.36 × 75 =
  16. 16.55 × 36 =
  17. 17.6 × 55 =
  18. 18.65 × 26 =
  19. 19.15 × 16 =
  20. 20.125 × 40 =
  21. 21.25 × 10 =
  22. 22.6 × 65 =
  23. 23.10 × 35 =
  24. 24.65 × 28 =
  25. 25.20 × 15 =
  26. 26.12 × 125 =
  27. 27.75 × 32 =
  28. 28.40 × 15 =
  29. 29.35 × 20 =
  30. 30.45 × 30 =
  31. 31.32 × 45 =
  32. 32.45 × 16 =
  33. 33.75 × 38 =
  34. 34.25 × 12 =
  35. 35.65 × 18 =
  36. 36.14 × 25 =
  37. 37.12 × 35 =
  38. 38.15 × 12 =
  39. 39.15 × 10 =
  40. 40.45 × 18 =

Answer key

  1. 500
  2. 560
  3. 1210
  4. 1040
  5. 660
  6. 2250
  7. 1000
  8. 600
  9. 480
  10. 1690
  11. 850
  12. 270
  13. 540
  14. 900
  15. 2700
  16. 1980
  17. 330
  18. 1690
  19. 240
  20. 5000
  21. 250
  22. 390
  23. 350
  24. 1820
  25. 300
  26. 1500
  27. 2400
  28. 600
  29. 700
  30. 1350
  31. 1440
  32. 720
  33. 2850
  34. 300
  35. 1170
  36. 350
  37. 420
  38. 180
  39. 150
  40. 810

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