← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 352 · 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. 1.55 × 8 =
  2. 2.75 × 10 =
  3. 3.18 × 35 =
  4. 4.75 × 12 =
  5. 5.65 × 20 =
  6. 6.38 × 35 =
  7. 7.75 × 26 =
  8. 8.55 × 6 =
  9. 9.25 × 28 =
  10. 10.55 × 26 =
  11. 11.55 × 10 =
  12. 12.15 × 22 =
  13. 13.32 × 55 =
  14. 14.65 × 28 =
  15. 15.25 × 38 =
  16. 16.25 × 14 =
  17. 17.125 × 6 =
  18. 18.16 × 65 =
  19. 19.32 × 35 =
  20. 20.25 × 6 =
  21. 21.125 × 18 =
  22. 22.30 × 125 =
  23. 23.15 × 16 =
  24. 24.40 × 55 =
  25. 25.18 × 35 =
  26. 26.8 × 45 =
  27. 27.8 × 125 =
  28. 28.10 × 15 =
  29. 29.8 × 35 =
  30. 30.125 × 18 =
  31. 31.25 × 10 =
  32. 32.55 × 8 =
  33. 33.35 × 28 =
  34. 34.75 × 40 =
  35. 35.125 × 14 =
  36. 36.75 × 22 =
  37. 37.35 × 14 =
  38. 38.25 × 36 =
  39. 39.65 × 14 =
  40. 40.32 × 65 =

Answer key

  1. 440
  2. 750
  3. 630
  4. 900
  5. 1300
  6. 1330
  7. 1950
  8. 330
  9. 700
  10. 1430
  11. 550
  12. 330
  13. 1760
  14. 1820
  15. 950
  16. 350
  17. 750
  18. 1040
  19. 1120
  20. 150
  21. 2250
  22. 3750
  23. 240
  24. 2200
  25. 630
  26. 360
  27. 1000
  28. 150
  29. 280
  30. 2250
  31. 250
  32. 440
  33. 980
  34. 3000
  35. 1750
  36. 1650
  37. 490
  38. 900
  39. 910
  40. 2080

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