← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 988 · 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. 1.24 × 45 =
  2. 2.45 × 10 =
  3. 3.30 × 15 =
  4. 4.40 × 35 =
  5. 5.40 × 125 =
  6. 6.18 × 75 =
  7. 7.75 × 30 =
  8. 8.22 × 45 =
  9. 9.24 × 25 =
  10. 10.65 × 32 =
  11. 11.20 × 75 =
  12. 12.65 × 32 =
  13. 13.38 × 75 =
  14. 14.6 × 25 =
  15. 15.25 × 6 =
  16. 16.6 × 45 =
  17. 17.34 × 45 =
  18. 18.16 × 15 =
  19. 19.20 × 75 =
  20. 20.15 × 8 =
  21. 21.22 × 15 =
  22. 22.35 × 38 =
  23. 23.28 × 35 =
  24. 24.14 × 65 =
  25. 25.45 × 18 =
  26. 26.40 × 65 =
  27. 27.16 × 45 =
  28. 28.30 × 75 =
  29. 29.30 × 15 =
  30. 30.20 × 35 =
  31. 31.125 × 12 =
  32. 32.15 × 22 =
  33. 33.6 × 15 =
  34. 34.55 × 40 =
  35. 35.45 × 10 =
  36. 36.25 × 6 =
  37. 37.14 × 55 =
  38. 38.38 × 75 =
  39. 39.125 × 18 =
  40. 40.75 × 18 =

Answer key

  1. 1080
  2. 450
  3. 450
  4. 1400
  5. 5000
  6. 1350
  7. 2250
  8. 990
  9. 600
  10. 2080
  11. 1500
  12. 2080
  13. 2850
  14. 150
  15. 150
  16. 270
  17. 1530
  18. 240
  19. 1500
  20. 120
  21. 330
  22. 1330
  23. 980
  24. 910
  25. 810
  26. 2600
  27. 720
  28. 2250
  29. 450
  30. 700
  31. 1500
  32. 330
  33. 90
  34. 2200
  35. 450
  36. 150
  37. 770
  38. 2850
  39. 2250
  40. 1350

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