← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 947 · 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. 1.55 × 8 =
  2. 2.55 × 28 =
  3. 3.10 × 65 =
  4. 4.55 × 8 =
  5. 5.36 × 125 =
  6. 6.75 × 40 =
  7. 7.75 × 22 =
  8. 8.15 × 24 =
  9. 9.28 × 45 =
  10. 10.55 × 10 =
  11. 11.125 × 36 =
  12. 12.32 × 45 =
  13. 13.125 × 16 =
  14. 14.22 × 125 =
  15. 15.65 × 30 =
  16. 16.45 × 6 =
  17. 17.6 × 65 =
  18. 18.32 × 45 =
  19. 19.15 × 6 =
  20. 20.15 × 20 =
  21. 21.6 × 125 =
  22. 22.10 × 125 =
  23. 23.15 × 32 =
  24. 24.20 × 45 =
  25. 25.38 × 25 =
  26. 26.30 × 15 =
  27. 27.125 × 12 =
  28. 28.12 × 15 =
  29. 29.30 × 15 =
  30. 30.65 × 34 =
  31. 31.125 × 14 =
  32. 32.8 × 75 =
  33. 33.25 × 16 =
  34. 34.75 × 38 =
  35. 35.15 × 22 =
  36. 36.125 × 6 =
  37. 37.75 × 34 =
  38. 38.35 × 32 =
  39. 39.38 × 55 =
  40. 40.45 × 10 =

Answer key

  1. 440
  2. 1540
  3. 650
  4. 440
  5. 4500
  6. 3000
  7. 1650
  8. 360
  9. 1260
  10. 550
  11. 4500
  12. 1440
  13. 2000
  14. 2750
  15. 1950
  16. 270
  17. 390
  18. 1440
  19. 90
  20. 300
  21. 750
  22. 1250
  23. 480
  24. 900
  25. 950
  26. 450
  27. 1500
  28. 180
  29. 450
  30. 2210
  31. 1750
  32. 600
  33. 400
  34. 2850
  35. 330
  36. 750
  37. 2550
  38. 1120
  39. 2090
  40. 450

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