← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 957 · 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 × 55 =
  2. 2.75 × 14 =
  3. 3.45 × 22 =
  4. 4.65 × 30 =
  5. 5.16 × 25 =
  6. 6.20 × 25 =
  7. 7.10 × 75 =
  8. 8.26 × 75 =
  9. 9.8 × 125 =
  10. 10.30 × 55 =
  11. 11.36 × 125 =
  12. 12.34 × 45 =
  13. 13.75 × 38 =
  14. 14.14 × 65 =
  15. 15.30 × 45 =
  16. 16.6 × 75 =
  17. 17.6 × 15 =
  18. 18.45 × 40 =
  19. 19.20 × 15 =
  20. 20.35 × 10 =
  21. 21.32 × 35 =
  22. 22.40 × 45 =
  23. 23.34 × 25 =
  24. 24.38 × 125 =
  25. 25.25 × 10 =
  26. 26.45 × 6 =
  27. 27.24 × 15 =
  28. 28.8 × 35 =
  29. 29.25 × 10 =
  30. 30.15 × 20 =
  31. 31.65 × 16 =
  32. 32.12 × 65 =
  33. 33.26 × 35 =
  34. 34.24 × 35 =
  35. 35.55 × 18 =
  36. 36.125 × 30 =
  37. 37.15 × 8 =
  38. 38.15 × 18 =
  39. 39.45 × 6 =
  40. 40.75 × 14 =

Answer key

  1. 550
  2. 1050
  3. 990
  4. 1950
  5. 400
  6. 500
  7. 750
  8. 1950
  9. 1000
  10. 1650
  11. 4500
  12. 1530
  13. 2850
  14. 910
  15. 1350
  16. 450
  17. 90
  18. 1800
  19. 300
  20. 350
  21. 1120
  22. 1800
  23. 850
  24. 4750
  25. 250
  26. 270
  27. 360
  28. 280
  29. 250
  30. 300
  31. 1040
  32. 780
  33. 910
  34. 840
  35. 990
  36. 3750
  37. 120
  38. 270
  39. 270
  40. 1050

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