← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 693 · 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 × 32 =
  2. 2.14 × 75 =
  3. 3.75 × 36 =
  4. 4.45 × 32 =
  5. 5.10 × 45 =
  6. 6.55 × 8 =
  7. 7.25 × 10 =
  8. 8.15 × 16 =
  9. 9.14 × 75 =
  10. 10.45 × 28 =
  11. 11.15 × 28 =
  12. 12.26 × 55 =
  13. 13.65 × 40 =
  14. 14.40 × 75 =
  15. 15.25 × 36 =
  16. 16.10 × 15 =
  17. 17.10 × 125 =
  18. 18.8 × 75 =
  19. 19.25 × 32 =
  20. 20.12 × 15 =
  21. 21.8 × 55 =
  22. 22.45 × 40 =
  23. 23.125 × 6 =
  24. 24.30 × 75 =
  25. 25.14 × 15 =
  26. 26.40 × 45 =
  27. 27.55 × 12 =
  28. 28.38 × 75 =
  29. 29.18 × 65 =
  30. 30.65 × 34 =
  31. 31.36 × 15 =
  32. 32.75 × 26 =
  33. 33.22 × 25 =
  34. 34.15 × 34 =
  35. 35.55 × 12 =
  36. 36.25 × 18 =
  37. 37.32 × 25 =
  38. 38.15 × 26 =
  39. 39.18 × 75 =
  40. 40.125 × 22 =

Answer key

  1. 480
  2. 1050
  3. 2700
  4. 1440
  5. 450
  6. 440
  7. 250
  8. 240
  9. 1050
  10. 1260
  11. 420
  12. 1430
  13. 2600
  14. 3000
  15. 900
  16. 150
  17. 1250
  18. 600
  19. 800
  20. 180
  21. 440
  22. 1800
  23. 750
  24. 2250
  25. 210
  26. 1800
  27. 660
  28. 2850
  29. 1170
  30. 2210
  31. 540
  32. 1950
  33. 550
  34. 510
  35. 660
  36. 450
  37. 800
  38. 390
  39. 1350
  40. 2750

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