← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 320 · 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. 1.38 × 55 =
  2. 2.28 × 25 =
  3. 3.55 × 12 =
  4. 4.16 × 25 =
  5. 5.15 × 26 =
  6. 6.65 × 10 =
  7. 7.14 × 15 =
  8. 8.45 × 12 =
  9. 9.20 × 75 =
  10. 10.35 × 14 =
  11. 11.55 × 38 =
  12. 12.40 × 15 =
  13. 13.34 × 35 =
  14. 14.15 × 10 =
  15. 15.75 × 10 =
  16. 16.25 × 20 =
  17. 17.8 × 45 =
  18. 18.55 × 10 =
  19. 19.24 × 15 =
  20. 20.38 × 35 =
  21. 21.8 × 55 =
  22. 22.40 × 75 =
  23. 23.125 × 28 =
  24. 24.24 × 45 =
  25. 25.16 × 25 =
  26. 26.55 × 6 =
  27. 27.35 × 26 =
  28. 28.75 × 26 =
  29. 29.35 × 10 =
  30. 30.32 × 75 =
  31. 31.38 × 35 =
  32. 32.15 × 36 =
  33. 33.25 × 10 =
  34. 34.28 × 125 =
  35. 35.55 × 34 =
  36. 36.65 × 18 =
  37. 37.125 × 24 =
  38. 38.22 × 45 =
  39. 39.18 × 15 =
  40. 40.20 × 35 =

Answer key

  1. 2090
  2. 700
  3. 660
  4. 400
  5. 390
  6. 650
  7. 210
  8. 540
  9. 1500
  10. 490
  11. 2090
  12. 600
  13. 1190
  14. 150
  15. 750
  16. 500
  17. 360
  18. 550
  19. 360
  20. 1330
  21. 440
  22. 3000
  23. 3500
  24. 1080
  25. 400
  26. 330
  27. 910
  28. 1950
  29. 350
  30. 2400
  31. 1330
  32. 540
  33. 250
  34. 3500
  35. 1870
  36. 1170
  37. 3000
  38. 990
  39. 270
  40. 700

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