← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 80 · 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. 1.125 × 24 =
  2. 2.65 × 18 =
  3. 3.10 × 15 =
  4. 4.55 × 24 =
  5. 5.65 × 36 =
  6. 6.45 × 40 =
  7. 7.45 × 38 =
  8. 8.34 × 75 =
  9. 9.8 × 25 =
  10. 10.14 × 45 =
  11. 11.24 × 75 =
  12. 12.12 × 25 =
  13. 13.65 × 26 =
  14. 14.6 × 55 =
  15. 15.30 × 25 =
  16. 16.65 × 22 =
  17. 17.35 × 14 =
  18. 18.25 × 10 =
  19. 19.12 × 25 =
  20. 20.28 × 75 =
  21. 21.65 × 26 =
  22. 22.32 × 75 =
  23. 23.26 × 125 =
  24. 24.32 × 75 =
  25. 25.40 × 75 =
  26. 26.6 × 45 =
  27. 27.36 × 35 =
  28. 28.45 × 14 =
  29. 29.36 × 15 =
  30. 30.65 × 16 =
  31. 31.35 × 38 =
  32. 32.65 × 30 =
  33. 33.45 × 38 =
  34. 34.25 × 20 =
  35. 35.45 × 38 =
  36. 36.18 × 45 =
  37. 37.75 × 36 =
  38. 38.16 × 35 =
  39. 39.14 × 35 =
  40. 40.26 × 55 =

Answer key

  1. 3000
  2. 1170
  3. 150
  4. 1320
  5. 2340
  6. 1800
  7. 1710
  8. 2550
  9. 200
  10. 630
  11. 1800
  12. 300
  13. 1690
  14. 330
  15. 750
  16. 1430
  17. 490
  18. 250
  19. 300
  20. 2100
  21. 1690
  22. 2400
  23. 3250
  24. 2400
  25. 3000
  26. 270
  27. 1260
  28. 630
  29. 540
  30. 1040
  31. 1330
  32. 1950
  33. 1710
  34. 500
  35. 1710
  36. 810
  37. 2700
  38. 560
  39. 490
  40. 1430

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