← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 977 · 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. 1.35 × 36 =
  2. 2.65 × 36 =
  3. 3.14 × 55 =
  4. 4.34 × 75 =
  5. 5.38 × 35 =
  6. 6.32 × 75 =
  7. 7.35 × 20 =
  8. 8.45 × 8 =
  9. 9.65 × 22 =
  10. 10.20 × 35 =
  11. 11.65 × 18 =
  12. 12.55 × 20 =
  13. 13.75 × 8 =
  14. 14.125 × 36 =
  15. 15.12 × 35 =
  16. 16.125 × 20 =
  17. 17.55 × 14 =
  18. 18.25 × 32 =
  19. 19.16 × 35 =
  20. 20.75 × 6 =
  21. 21.35 × 28 =
  22. 22.38 × 125 =
  23. 23.25 × 28 =
  24. 24.12 × 75 =
  25. 25.34 × 35 =
  26. 26.12 × 45 =
  27. 27.35 × 6 =
  28. 28.22 × 15 =
  29. 29.75 × 6 =
  30. 30.65 × 6 =
  31. 31.10 × 15 =
  32. 32.35 × 32 =
  33. 33.14 × 25 =
  34. 34.25 × 24 =
  35. 35.14 × 15 =
  36. 36.8 × 125 =
  37. 37.45 × 8 =
  38. 38.36 × 45 =
  39. 39.75 × 40 =
  40. 40.16 × 125 =

Answer key

  1. 1260
  2. 2340
  3. 770
  4. 2550
  5. 1330
  6. 2400
  7. 700
  8. 360
  9. 1430
  10. 700
  11. 1170
  12. 1100
  13. 600
  14. 4500
  15. 420
  16. 2500
  17. 770
  18. 800
  19. 560
  20. 450
  21. 980
  22. 4750
  23. 700
  24. 900
  25. 1190
  26. 540
  27. 210
  28. 330
  29. 450
  30. 390
  31. 150
  32. 1120
  33. 350
  34. 600
  35. 210
  36. 1000
  37. 360
  38. 1620
  39. 3000
  40. 2000

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