← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 232 · 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. 1.8 × 55 =
  2. 2.125 × 24 =
  3. 3.35 × 16 =
  4. 4.55 × 6 =
  5. 5.16 × 75 =
  6. 6.25 × 30 =
  7. 7.125 × 12 =
  8. 8.25 × 32 =
  9. 9.20 × 55 =
  10. 10.55 × 8 =
  11. 11.55 × 28 =
  12. 12.25 × 22 =
  13. 13.8 × 75 =
  14. 14.22 × 45 =
  15. 15.25 × 12 =
  16. 16.65 × 12 =
  17. 17.65 × 38 =
  18. 18.15 × 14 =
  19. 19.18 × 25 =
  20. 20.75 × 8 =
  21. 21.6 × 15 =
  22. 22.75 × 8 =
  23. 23.65 × 30 =
  24. 24.35 × 40 =
  25. 25.36 × 55 =
  26. 26.125 × 32 =
  27. 27.25 × 20 =
  28. 28.16 × 35 =
  29. 29.18 × 125 =
  30. 30.125 × 10 =
  31. 31.25 × 22 =
  32. 32.16 × 65 =
  33. 33.55 × 14 =
  34. 34.20 × 65 =
  35. 35.125 × 12 =
  36. 36.26 × 125 =
  37. 37.15 × 8 =
  38. 38.34 × 15 =
  39. 39.6 × 35 =
  40. 40.75 × 24 =

Answer key

  1. 440
  2. 3000
  3. 560
  4. 330
  5. 1200
  6. 750
  7. 1500
  8. 800
  9. 1100
  10. 440
  11. 1540
  12. 550
  13. 600
  14. 990
  15. 300
  16. 780
  17. 2470
  18. 210
  19. 450
  20. 600
  21. 90
  22. 600
  23. 1950
  24. 1400
  25. 1980
  26. 4000
  27. 500
  28. 560
  29. 2250
  30. 1250
  31. 550
  32. 1040
  33. 770
  34. 1300
  35. 1500
  36. 3250
  37. 120
  38. 510
  39. 210
  40. 1800

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