← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 928 · 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. 1.35 × 32 =
  2. 2.15 × 32 =
  3. 3.65 × 40 =
  4. 4.45 × 38 =
  5. 5.40 × 125 =
  6. 6.20 × 55 =
  7. 7.6 × 65 =
  8. 8.25 × 18 =
  9. 9.40 × 35 =
  10. 10.35 × 20 =
  11. 11.25 × 8 =
  12. 12.35 × 32 =
  13. 13.55 × 34 =
  14. 14.45 × 22 =
  15. 15.30 × 15 =
  16. 16.25 × 38 =
  17. 17.6 × 55 =
  18. 18.20 × 55 =
  19. 19.35 × 28 =
  20. 20.38 × 45 =
  21. 21.25 × 26 =
  22. 22.45 × 34 =
  23. 23.35 × 30 =
  24. 24.14 × 35 =
  25. 25.12 × 35 =
  26. 26.15 × 34 =
  27. 27.40 × 35 =
  28. 28.55 × 12 =
  29. 29.125 × 34 =
  30. 30.14 × 35 =
  31. 31.45 × 18 =
  32. 32.55 × 30 =
  33. 33.14 × 45 =
  34. 34.24 × 35 =
  35. 35.38 × 25 =
  36. 36.40 × 25 =
  37. 37.55 × 30 =
  38. 38.75 × 20 =
  39. 39.16 × 45 =
  40. 40.30 × 45 =

Answer key

  1. 1120
  2. 480
  3. 2600
  4. 1710
  5. 5000
  6. 1100
  7. 390
  8. 450
  9. 1400
  10. 700
  11. 200
  12. 1120
  13. 1870
  14. 990
  15. 450
  16. 950
  17. 330
  18. 1100
  19. 980
  20. 1710
  21. 650
  22. 1530
  23. 1050
  24. 490
  25. 420
  26. 510
  27. 1400
  28. 660
  29. 4250
  30. 490
  31. 810
  32. 1650
  33. 630
  34. 840
  35. 950
  36. 1000
  37. 1650
  38. 1500
  39. 720
  40. 1350

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