← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 82 · 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. 1.34 × 65 =
  2. 2.8 × 75 =
  3. 3.18 × 35 =
  4. 4.8 × 65 =
  5. 5.75 × 40 =
  6. 6.75 × 28 =
  7. 7.38 × 65 =
  8. 8.24 × 75 =
  9. 9.28 × 35 =
  10. 10.65 × 36 =
  11. 11.18 × 25 =
  12. 12.35 × 36 =
  13. 13.65 × 10 =
  14. 14.10 × 15 =
  15. 15.16 × 45 =
  16. 16.25 × 14 =
  17. 17.12 × 15 =
  18. 18.10 × 15 =
  19. 19.125 × 30 =
  20. 20.75 × 24 =
  21. 21.14 × 25 =
  22. 22.8 × 25 =
  23. 23.40 × 25 =
  24. 24.15 × 10 =
  25. 25.35 × 40 =
  26. 26.22 × 125 =
  27. 27.18 × 25 =
  28. 28.30 × 25 =
  29. 29.125 × 20 =
  30. 30.125 × 12 =
  31. 31.65 × 16 =
  32. 32.26 × 25 =
  33. 33.65 × 22 =
  34. 34.65 × 12 =
  35. 35.22 × 25 =
  36. 36.24 × 25 =
  37. 37.20 × 45 =
  38. 38.125 × 14 =
  39. 39.15 × 20 =
  40. 40.32 × 75 =

Answer key

  1. 2210
  2. 600
  3. 630
  4. 520
  5. 3000
  6. 2100
  7. 2470
  8. 1800
  9. 980
  10. 2340
  11. 450
  12. 1260
  13. 650
  14. 150
  15. 720
  16. 350
  17. 180
  18. 150
  19. 3750
  20. 1800
  21. 350
  22. 200
  23. 1000
  24. 150
  25. 1400
  26. 2750
  27. 450
  28. 750
  29. 2500
  30. 1500
  31. 1040
  32. 650
  33. 1430
  34. 780
  35. 550
  36. 600
  37. 900
  38. 1750
  39. 300
  40. 2400

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