← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 817 · 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. 1.14 × 35 =
  2. 2.75 × 26 =
  3. 3.15 × 8 =
  4. 4.10 × 75 =
  5. 5.45 × 18 =
  6. 6.125 × 22 =
  7. 7.32 × 125 =
  8. 8.75 × 24 =
  9. 9.75 × 8 =
  10. 10.18 × 125 =
  11. 11.26 × 25 =
  12. 12.55 × 16 =
  13. 13.10 × 55 =
  14. 14.24 × 25 =
  15. 15.10 × 55 =
  16. 16.75 × 8 =
  17. 17.38 × 45 =
  18. 18.15 × 24 =
  19. 19.16 × 75 =
  20. 20.30 × 25 =
  21. 21.25 × 24 =
  22. 22.38 × 25 =
  23. 23.14 × 55 =
  24. 24.25 × 8 =
  25. 25.75 × 10 =
  26. 26.12 × 65 =
  27. 27.18 × 125 =
  28. 28.75 × 12 =
  29. 29.16 × 25 =
  30. 30.125 × 8 =
  31. 31.45 × 12 =
  32. 32.10 × 125 =
  33. 33.25 × 22 =
  34. 34.75 × 20 =
  35. 35.24 × 125 =
  36. 36.35 × 10 =
  37. 37.14 × 15 =
  38. 38.16 × 25 =
  39. 39.24 × 45 =
  40. 40.36 × 125 =

Answer key

  1. 490
  2. 1950
  3. 120
  4. 750
  5. 810
  6. 2750
  7. 4000
  8. 1800
  9. 600
  10. 2250
  11. 650
  12. 880
  13. 550
  14. 600
  15. 550
  16. 600
  17. 1710
  18. 360
  19. 1200
  20. 750
  21. 600
  22. 950
  23. 770
  24. 200
  25. 750
  26. 780
  27. 2250
  28. 900
  29. 400
  30. 1000
  31. 540
  32. 1250
  33. 550
  34. 1500
  35. 3000
  36. 350
  37. 210
  38. 400
  39. 1080
  40. 4500

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