← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 556 · 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. 1.15 × 16 =
  2. 2.22 × 25 =
  3. 3.45 × 34 =
  4. 4.26 × 25 =
  5. 5.65 × 12 =
  6. 6.35 × 14 =
  7. 7.10 × 45 =
  8. 8.26 × 65 =
  9. 9.65 × 32 =
  10. 10.65 × 26 =
  11. 11.55 × 22 =
  12. 12.125 × 18 =
  13. 13.22 × 35 =
  14. 14.10 × 45 =
  15. 15.18 × 125 =
  16. 16.15 × 10 =
  17. 17.20 × 45 =
  18. 18.10 × 55 =
  19. 19.65 × 20 =
  20. 20.14 × 65 =
  21. 21.75 × 22 =
  22. 22.26 × 15 =
  23. 23.35 × 38 =
  24. 24.40 × 15 =
  25. 25.38 × 75 =
  26. 26.55 × 28 =
  27. 27.18 × 75 =
  28. 28.36 × 45 =
  29. 29.125 × 20 =
  30. 30.32 × 25 =
  31. 31.8 × 15 =
  32. 32.75 × 30 =
  33. 33.125 × 6 =
  34. 34.65 × 8 =
  35. 35.125 × 18 =
  36. 36.40 × 25 =
  37. 37.75 × 8 =
  38. 38.125 × 38 =
  39. 39.45 × 18 =
  40. 40.35 × 12 =

Answer key

  1. 240
  2. 550
  3. 1530
  4. 650
  5. 780
  6. 490
  7. 450
  8. 1690
  9. 2080
  10. 1690
  11. 1210
  12. 2250
  13. 770
  14. 450
  15. 2250
  16. 150
  17. 900
  18. 550
  19. 1300
  20. 910
  21. 1650
  22. 390
  23. 1330
  24. 600
  25. 2850
  26. 1540
  27. 1350
  28. 1620
  29. 2500
  30. 800
  31. 120
  32. 2250
  33. 750
  34. 520
  35. 2250
  36. 1000
  37. 600
  38. 4750
  39. 810
  40. 420

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