← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 48 · 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. 1.16 × 25 =
  2. 2.10 × 15 =
  3. 3.65 × 22 =
  4. 4.28 × 25 =
  5. 5.26 × 125 =
  6. 6.45 × 40 =
  7. 7.38 × 35 =
  8. 8.15 × 26 =
  9. 9.35 × 16 =
  10. 10.8 × 35 =
  11. 11.38 × 15 =
  12. 12.55 × 30 =
  13. 13.55 × 16 =
  14. 14.12 × 75 =
  15. 15.25 × 6 =
  16. 16.35 × 34 =
  17. 17.35 × 18 =
  18. 18.125 × 20 =
  19. 19.15 × 8 =
  20. 20.65 × 14 =
  21. 21.38 × 25 =
  22. 22.40 × 15 =
  23. 23.125 × 38 =
  24. 24.75 × 16 =
  25. 25.25 × 38 =
  26. 26.18 × 75 =
  27. 27.15 × 10 =
  28. 28.36 × 35 =
  29. 29.65 × 22 =
  30. 30.14 × 75 =
  31. 31.10 × 15 =
  32. 32.10 × 65 =
  33. 33.45 × 16 =
  34. 34.28 × 45 =
  35. 35.65 × 6 =
  36. 36.8 × 55 =
  37. 37.25 × 8 =
  38. 38.15 × 26 =
  39. 39.55 × 14 =
  40. 40.12 × 65 =

Answer key

  1. 400
  2. 150
  3. 1430
  4. 700
  5. 3250
  6. 1800
  7. 1330
  8. 390
  9. 560
  10. 280
  11. 570
  12. 1650
  13. 880
  14. 900
  15. 150
  16. 1190
  17. 630
  18. 2500
  19. 120
  20. 910
  21. 950
  22. 600
  23. 4750
  24. 1200
  25. 950
  26. 1350
  27. 150
  28. 1260
  29. 1430
  30. 1050
  31. 150
  32. 650
  33. 720
  34. 1260
  35. 390
  36. 440
  37. 200
  38. 390
  39. 770
  40. 780

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