← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 831 · 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 × 55 =
  2. 2.20 × 35 =
  3. 3.55 × 28 =
  4. 4.8 × 55 =
  5. 5.45 × 8 =
  6. 6.32 × 35 =
  7. 7.16 × 45 =
  8. 8.15 × 18 =
  9. 9.65 × 36 =
  10. 10.14 × 75 =
  11. 11.65 × 36 =
  12. 12.8 × 15 =
  13. 13.6 × 45 =
  14. 14.45 × 30 =
  15. 15.30 × 125 =
  16. 16.16 × 35 =
  17. 17.65 × 10 =
  18. 18.30 × 45 =
  19. 19.15 × 22 =
  20. 20.45 × 20 =
  21. 21.38 × 55 =
  22. 22.75 × 8 =
  23. 23.125 × 16 =
  24. 24.20 × 15 =
  25. 25.15 × 22 =
  26. 26.15 × 16 =
  27. 27.15 × 22 =
  28. 28.22 × 55 =
  29. 29.75 × 40 =
  30. 30.34 × 55 =
  31. 31.8 × 15 =
  32. 32.36 × 75 =
  33. 33.40 × 55 =
  34. 34.25 × 18 =
  35. 35.16 × 65 =
  36. 36.22 × 15 =
  37. 37.35 × 38 =
  38. 38.125 × 34 =
  39. 39.15 × 24 =
  40. 40.12 × 25 =

Answer key

  1. 1870
  2. 700
  3. 1540
  4. 440
  5. 360
  6. 1120
  7. 720
  8. 270
  9. 2340
  10. 1050
  11. 2340
  12. 120
  13. 270
  14. 1350
  15. 3750
  16. 560
  17. 650
  18. 1350
  19. 330
  20. 900
  21. 2090
  22. 600
  23. 2000
  24. 300
  25. 330
  26. 240
  27. 330
  28. 1210
  29. 3000
  30. 1870
  31. 120
  32. 2700
  33. 2200
  34. 450
  35. 1040
  36. 330
  37. 1330
  38. 4250
  39. 360
  40. 300

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