← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 674 · 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. 1.45 × 20 =
  2. 2.75 × 6 =
  3. 3.15 × 24 =
  4. 4.40 × 55 =
  5. 5.35 × 34 =
  6. 6.32 × 55 =
  7. 7.32 × 55 =
  8. 8.55 × 26 =
  9. 9.6 × 75 =
  10. 10.16 × 125 =
  11. 11.38 × 15 =
  12. 12.45 × 16 =
  13. 13.55 × 14 =
  14. 14.16 × 25 =
  15. 15.16 × 35 =
  16. 16.45 × 10 =
  17. 17.65 × 22 =
  18. 18.8 × 55 =
  19. 19.65 × 14 =
  20. 20.45 × 34 =
  21. 21.18 × 45 =
  22. 22.12 × 75 =
  23. 23.75 × 28 =
  24. 24.45 × 26 =
  25. 25.125 × 24 =
  26. 26.16 × 55 =
  27. 27.125 × 20 =
  28. 28.45 × 28 =
  29. 29.65 × 12 =
  30. 30.15 × 20 =
  31. 31.65 × 34 =
  32. 32.15 × 28 =
  33. 33.35 × 16 =
  34. 34.15 × 10 =
  35. 35.40 × 75 =
  36. 36.34 × 25 =
  37. 37.18 × 15 =
  38. 38.65 × 40 =
  39. 39.24 × 25 =
  40. 40.38 × 35 =

Answer key

  1. 900
  2. 450
  3. 360
  4. 2200
  5. 1190
  6. 1760
  7. 1760
  8. 1430
  9. 450
  10. 2000
  11. 570
  12. 720
  13. 770
  14. 400
  15. 560
  16. 450
  17. 1430
  18. 440
  19. 910
  20. 1530
  21. 810
  22. 900
  23. 2100
  24. 1170
  25. 3000
  26. 880
  27. 2500
  28. 1260
  29. 780
  30. 300
  31. 2210
  32. 420
  33. 560
  34. 150
  35. 3000
  36. 850
  37. 270
  38. 2600
  39. 600
  40. 1330

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