← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 878 · 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. 1.30 × 15 =
  2. 2.25 × 8 =
  3. 3.6 × 125 =
  4. 4.15 × 28 =
  5. 5.40 × 15 =
  6. 6.65 × 6 =
  7. 7.75 × 16 =
  8. 8.35 × 26 =
  9. 9.45 × 38 =
  10. 10.8 × 45 =
  11. 11.35 × 30 =
  12. 12.28 × 65 =
  13. 13.22 × 45 =
  14. 14.45 × 30 =
  15. 15.65 × 18 =
  16. 16.30 × 35 =
  17. 17.75 × 28 =
  18. 18.10 × 45 =
  19. 19.20 × 25 =
  20. 20.45 × 12 =
  21. 21.6 × 75 =
  22. 22.45 × 26 =
  23. 23.55 × 26 =
  24. 24.12 × 45 =
  25. 25.8 × 15 =
  26. 26.25 × 26 =
  27. 27.14 × 25 =
  28. 28.35 × 28 =
  29. 29.12 × 75 =
  30. 30.8 × 25 =
  31. 31.125 × 18 =
  32. 32.10 × 15 =
  33. 33.125 × 8 =
  34. 34.36 × 75 =
  35. 35.25 × 36 =
  36. 36.75 × 32 =
  37. 37.75 × 22 =
  38. 38.24 × 45 =
  39. 39.40 × 15 =
  40. 40.34 × 55 =

Answer key

  1. 450
  2. 200
  3. 750
  4. 420
  5. 600
  6. 390
  7. 1200
  8. 910
  9. 1710
  10. 360
  11. 1050
  12. 1820
  13. 990
  14. 1350
  15. 1170
  16. 1050
  17. 2100
  18. 450
  19. 500
  20. 540
  21. 450
  22. 1170
  23. 1430
  24. 540
  25. 120
  26. 650
  27. 350
  28. 980
  29. 900
  30. 200
  31. 2250
  32. 150
  33. 1000
  34. 2700
  35. 900
  36. 2400
  37. 1650
  38. 1080
  39. 600
  40. 1870

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