← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 211 · 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. 1.45 × 12 =
  2. 2.55 × 16 =
  3. 3.65 × 36 =
  4. 4.125 × 10 =
  5. 5.125 × 20 =
  6. 6.36 × 15 =
  7. 7.16 × 35 =
  8. 8.35 × 34 =
  9. 9.34 × 55 =
  10. 10.25 × 12 =
  11. 11.75 × 36 =
  12. 12.12 × 25 =
  13. 13.25 × 32 =
  14. 14.55 × 12 =
  15. 15.25 × 36 =
  16. 16.22 × 55 =
  17. 17.15 × 38 =
  18. 18.30 × 45 =
  19. 19.15 × 36 =
  20. 20.6 × 45 =
  21. 21.15 × 36 =
  22. 22.45 × 40 =
  23. 23.24 × 55 =
  24. 24.25 × 30 =
  25. 25.28 × 65 =
  26. 26.75 × 38 =
  27. 27.6 × 55 =
  28. 28.75 × 8 =
  29. 29.55 × 40 =
  30. 30.45 × 30 =
  31. 31.8 × 125 =
  32. 32.125 × 30 =
  33. 33.34 × 15 =
  34. 34.30 × 25 =
  35. 35.125 × 8 =
  36. 36.15 × 26 =
  37. 37.14 × 25 =
  38. 38.10 × 125 =
  39. 39.125 × 22 =
  40. 40.75 × 20 =

Answer key

  1. 540
  2. 880
  3. 2340
  4. 1250
  5. 2500
  6. 540
  7. 560
  8. 1190
  9. 1870
  10. 300
  11. 2700
  12. 300
  13. 800
  14. 660
  15. 900
  16. 1210
  17. 570
  18. 1350
  19. 540
  20. 270
  21. 540
  22. 1800
  23. 1320
  24. 750
  25. 1820
  26. 2850
  27. 330
  28. 600
  29. 2200
  30. 1350
  31. 1000
  32. 3750
  33. 510
  34. 750
  35. 1000
  36. 390
  37. 350
  38. 1250
  39. 2750
  40. 1500

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