← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 403 · 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. 1.125 × 16 =
  2. 2.45 × 6 =
  3. 3.55 × 24 =
  4. 4.36 × 15 =
  5. 5.125 × 20 =
  6. 6.25 × 28 =
  7. 7.22 × 125 =
  8. 8.36 × 15 =
  9. 9.75 × 10 =
  10. 10.6 × 65 =
  11. 11.24 × 125 =
  12. 12.35 × 6 =
  13. 13.15 × 14 =
  14. 14.32 × 125 =
  15. 15.12 × 15 =
  16. 16.15 × 12 =
  17. 17.125 × 12 =
  18. 18.10 × 25 =
  19. 19.36 × 25 =
  20. 20.18 × 65 =
  21. 21.75 × 18 =
  22. 22.8 × 45 =
  23. 23.32 × 125 =
  24. 24.24 × 15 =
  25. 25.32 × 45 =
  26. 26.30 × 25 =
  27. 27.15 × 8 =
  28. 28.26 × 25 =
  29. 29.32 × 25 =
  30. 30.10 × 75 =
  31. 31.45 × 28 =
  32. 32.65 × 22 =
  33. 33.16 × 15 =
  34. 34.15 × 38 =
  35. 35.22 × 75 =
  36. 36.12 × 125 =
  37. 37.24 × 35 =
  38. 38.15 × 40 =
  39. 39.55 × 28 =
  40. 40.75 × 22 =

Answer key

  1. 2000
  2. 270
  3. 1320
  4. 540
  5. 2500
  6. 700
  7. 2750
  8. 540
  9. 750
  10. 390
  11. 3000
  12. 210
  13. 210
  14. 4000
  15. 180
  16. 180
  17. 1500
  18. 250
  19. 900
  20. 1170
  21. 1350
  22. 360
  23. 4000
  24. 360
  25. 1440
  26. 750
  27. 120
  28. 650
  29. 800
  30. 750
  31. 1260
  32. 1430
  33. 240
  34. 570
  35. 1650
  36. 1500
  37. 840
  38. 600
  39. 1540
  40. 1650

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