← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 328 · 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. 1.35 × 10 =
  2. 2.75 × 10 =
  3. 3.6 × 15 =
  4. 4.15 × 14 =
  5. 5.30 × 45 =
  6. 6.75 × 26 =
  7. 7.24 × 125 =
  8. 8.20 × 55 =
  9. 9.12 × 75 =
  10. 10.15 × 18 =
  11. 11.15 × 34 =
  12. 12.35 × 16 =
  13. 13.15 × 26 =
  14. 14.32 × 55 =
  15. 15.125 × 14 =
  16. 16.20 × 15 =
  17. 17.20 × 15 =
  18. 18.75 × 26 =
  19. 19.6 × 45 =
  20. 20.25 × 20 =
  21. 21.26 × 65 =
  22. 22.16 × 45 =
  23. 23.16 × 35 =
  24. 24.35 × 38 =
  25. 25.10 × 65 =
  26. 26.16 × 75 =
  27. 27.38 × 55 =
  28. 28.28 × 45 =
  29. 29.6 × 45 =
  30. 30.25 × 10 =
  31. 31.15 × 20 =
  32. 32.30 × 15 =
  33. 33.45 × 12 =
  34. 34.45 × 18 =
  35. 35.32 × 75 =
  36. 36.125 × 8 =
  37. 37.15 × 28 =
  38. 38.15 × 40 =
  39. 39.25 × 6 =
  40. 40.26 × 125 =

Answer key

  1. 350
  2. 750
  3. 90
  4. 210
  5. 1350
  6. 1950
  7. 3000
  8. 1100
  9. 900
  10. 270
  11. 510
  12. 560
  13. 390
  14. 1760
  15. 1750
  16. 300
  17. 300
  18. 1950
  19. 270
  20. 500
  21. 1690
  22. 720
  23. 560
  24. 1330
  25. 650
  26. 1200
  27. 2090
  28. 1260
  29. 270
  30. 250
  31. 300
  32. 450
  33. 540
  34. 810
  35. 2400
  36. 1000
  37. 420
  38. 600
  39. 150
  40. 3250

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