← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 801 · 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. 1.18 × 55 =
  2. 2.125 × 38 =
  3. 3.65 × 24 =
  4. 4.45 × 26 =
  5. 5.75 × 6 =
  6. 6.25 × 24 =
  7. 7.12 × 25 =
  8. 8.34 × 45 =
  9. 9.25 × 22 =
  10. 10.25 × 34 =
  11. 11.45 × 30 =
  12. 12.125 × 26 =
  13. 13.24 × 75 =
  14. 14.30 × 15 =
  15. 15.16 × 15 =
  16. 16.28 × 25 =
  17. 17.35 × 34 =
  18. 18.55 × 10 =
  19. 19.10 × 45 =
  20. 20.18 × 45 =
  21. 21.6 × 125 =
  22. 22.32 × 25 =
  23. 23.8 × 75 =
  24. 24.35 × 20 =
  25. 25.15 × 18 =
  26. 26.6 × 35 =
  27. 27.26 × 35 =
  28. 28.38 × 65 =
  29. 29.8 × 65 =
  30. 30.65 × 8 =
  31. 31.75 × 36 =
  32. 32.18 × 65 =
  33. 33.38 × 55 =
  34. 34.65 × 26 =
  35. 35.24 × 45 =
  36. 36.75 × 8 =
  37. 37.45 × 28 =
  38. 38.75 × 10 =
  39. 39.45 × 18 =
  40. 40.25 × 28 =

Answer key

  1. 990
  2. 4750
  3. 1560
  4. 1170
  5. 450
  6. 600
  7. 300
  8. 1530
  9. 550
  10. 850
  11. 1350
  12. 3250
  13. 1800
  14. 450
  15. 240
  16. 700
  17. 1190
  18. 550
  19. 450
  20. 810
  21. 750
  22. 800
  23. 600
  24. 700
  25. 270
  26. 210
  27. 910
  28. 2470
  29. 520
  30. 520
  31. 2700
  32. 1170
  33. 2090
  34. 1690
  35. 1080
  36. 600
  37. 1260
  38. 750
  39. 810
  40. 700

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