← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 509 · 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. 1.30 × 45 =
  2. 2.45 × 8 =
  3. 3.35 × 40 =
  4. 4.38 × 125 =
  5. 5.18 × 75 =
  6. 6.15 × 8 =
  7. 7.36 × 15 =
  8. 8.65 × 36 =
  9. 9.26 × 15 =
  10. 10.25 × 14 =
  11. 11.25 × 30 =
  12. 12.22 × 45 =
  13. 13.45 × 20 =
  14. 14.24 × 125 =
  15. 15.28 × 25 =
  16. 16.25 × 26 =
  17. 17.22 × 45 =
  18. 18.55 × 20 =
  19. 19.15 × 36 =
  20. 20.8 × 15 =
  21. 21.15 × 12 =
  22. 22.38 × 25 =
  23. 23.16 × 125 =
  24. 24.12 × 15 =
  25. 25.24 × 45 =
  26. 26.20 × 75 =
  27. 27.25 × 16 =
  28. 28.15 × 6 =
  29. 29.35 × 12 =
  30. 30.22 × 25 =
  31. 31.55 × 16 =
  32. 32.36 × 45 =
  33. 33.35 × 30 =
  34. 34.25 × 38 =
  35. 35.12 × 125 =
  36. 36.8 × 25 =
  37. 37.25 × 24 =
  38. 38.34 × 55 =
  39. 39.32 × 35 =
  40. 40.40 × 35 =

Answer key

  1. 1350
  2. 360
  3. 1400
  4. 4750
  5. 1350
  6. 120
  7. 540
  8. 2340
  9. 390
  10. 350
  11. 750
  12. 990
  13. 900
  14. 3000
  15. 700
  16. 650
  17. 990
  18. 1100
  19. 540
  20. 120
  21. 180
  22. 950
  23. 2000
  24. 180
  25. 1080
  26. 1500
  27. 400
  28. 90
  29. 420
  30. 550
  31. 880
  32. 1620
  33. 1050
  34. 950
  35. 1500
  36. 200
  37. 600
  38. 1870
  39. 1120
  40. 1400

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