← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 776 · 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. 1.10 × 65 =
  2. 2.75 × 8 =
  3. 3.75 × 10 =
  4. 4.26 × 55 =
  5. 5.28 × 35 =
  6. 6.32 × 45 =
  7. 7.125 × 22 =
  8. 8.25 × 12 =
  9. 9.16 × 125 =
  10. 10.125 × 40 =
  11. 11.34 × 45 =
  12. 12.32 × 35 =
  13. 13.45 × 14 =
  14. 14.36 × 65 =
  15. 15.45 × 12 =
  16. 16.35 × 10 =
  17. 17.28 × 25 =
  18. 18.8 × 125 =
  19. 19.35 × 36 =
  20. 20.75 × 22 =
  21. 21.125 × 36 =
  22. 22.28 × 75 =
  23. 23.15 × 34 =
  24. 24.55 × 36 =
  25. 25.25 × 10 =
  26. 26.12 × 25 =
  27. 27.22 × 65 =
  28. 28.18 × 45 =
  29. 29.75 × 12 =
  30. 30.10 × 125 =
  31. 31.45 × 30 =
  32. 32.125 × 18 =
  33. 33.65 × 34 =
  34. 34.26 × 35 =
  35. 35.55 × 36 =
  36. 36.24 × 15 =
  37. 37.15 × 40 =
  38. 38.12 × 15 =
  39. 39.25 × 36 =
  40. 40.35 × 14 =

Answer key

  1. 650
  2. 600
  3. 750
  4. 1430
  5. 980
  6. 1440
  7. 2750
  8. 300
  9. 2000
  10. 5000
  11. 1530
  12. 1120
  13. 630
  14. 2340
  15. 540
  16. 350
  17. 700
  18. 1000
  19. 1260
  20. 1650
  21. 4500
  22. 2100
  23. 510
  24. 1980
  25. 250
  26. 300
  27. 1430
  28. 810
  29. 900
  30. 1250
  31. 1350
  32. 2250
  33. 2210
  34. 910
  35. 1980
  36. 360
  37. 600
  38. 180
  39. 900
  40. 490

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