← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 597 · 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. 1.25 × 34 =
  2. 2.12 × 15 =
  3. 3.65 × 24 =
  4. 4.30 × 55 =
  5. 5.35 × 22 =
  6. 6.10 × 25 =
  7. 7.14 × 25 =
  8. 8.35 × 26 =
  9. 9.40 × 55 =
  10. 10.65 × 8 =
  11. 11.75 × 40 =
  12. 12.30 × 65 =
  13. 13.25 × 34 =
  14. 14.25 × 38 =
  15. 15.32 × 35 =
  16. 16.45 × 6 =
  17. 17.65 × 12 =
  18. 18.15 × 10 =
  19. 19.22 × 35 =
  20. 20.14 × 65 =
  21. 21.25 × 28 =
  22. 22.26 × 55 =
  23. 23.12 × 25 =
  24. 24.40 × 125 =
  25. 25.22 × 15 =
  26. 26.36 × 45 =
  27. 27.55 × 8 =
  28. 28.55 × 26 =
  29. 29.25 × 28 =
  30. 30.65 × 30 =
  31. 31.36 × 55 =
  32. 32.26 × 125 =
  33. 33.25 × 40 =
  34. 34.28 × 55 =
  35. 35.35 × 22 =
  36. 36.25 × 12 =
  37. 37.35 × 16 =
  38. 38.35 × 12 =
  39. 39.25 × 40 =
  40. 40.45 × 26 =

Answer key

  1. 850
  2. 180
  3. 1560
  4. 1650
  5. 770
  6. 250
  7. 350
  8. 910
  9. 2200
  10. 520
  11. 3000
  12. 1950
  13. 850
  14. 950
  15. 1120
  16. 270
  17. 780
  18. 150
  19. 770
  20. 910
  21. 700
  22. 1430
  23. 300
  24. 5000
  25. 330
  26. 1620
  27. 440
  28. 1430
  29. 700
  30. 1950
  31. 1980
  32. 3250
  33. 1000
  34. 1540
  35. 770
  36. 300
  37. 560
  38. 420
  39. 1000
  40. 1170

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