← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 670 · 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. 1.26 × 55 =
  2. 2.55 × 20 =
  3. 3.28 × 45 =
  4. 4.45 × 16 =
  5. 5.24 × 55 =
  6. 6.35 × 26 =
  7. 7.36 × 45 =
  8. 8.45 × 6 =
  9. 9.65 × 32 =
  10. 10.45 × 32 =
  11. 11.55 × 36 =
  12. 12.75 × 20 =
  13. 13.34 × 65 =
  14. 14.35 × 22 =
  15. 15.45 × 18 =
  16. 16.18 × 45 =
  17. 17.55 × 16 =
  18. 18.38 × 125 =
  19. 19.45 × 20 =
  20. 20.22 × 15 =
  21. 21.34 × 25 =
  22. 22.18 × 25 =
  23. 23.14 × 15 =
  24. 24.15 × 30 =
  25. 25.25 × 6 =
  26. 26.75 × 10 =
  27. 27.26 × 75 =
  28. 28.12 × 25 =
  29. 29.125 × 16 =
  30. 30.65 × 26 =
  31. 31.55 × 18 =
  32. 32.14 × 45 =
  33. 33.65 × 14 =
  34. 34.28 × 25 =
  35. 35.75 × 16 =
  36. 36.125 × 40 =
  37. 37.34 × 125 =
  38. 38.18 × 25 =
  39. 39.10 × 45 =
  40. 40.35 × 24 =

Answer key

  1. 1430
  2. 1100
  3. 1260
  4. 720
  5. 1320
  6. 910
  7. 1620
  8. 270
  9. 2080
  10. 1440
  11. 1980
  12. 1500
  13. 2210
  14. 770
  15. 810
  16. 810
  17. 880
  18. 4750
  19. 900
  20. 330
  21. 850
  22. 450
  23. 210
  24. 450
  25. 150
  26. 750
  27. 1950
  28. 300
  29. 2000
  30. 1690
  31. 990
  32. 630
  33. 910
  34. 700
  35. 1200
  36. 5000
  37. 4250
  38. 450
  39. 450
  40. 840

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