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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 269 · 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. 1.15 × 34 =
  2. 2.14 × 75 =
  3. 3.25 × 26 =
  4. 4.8 × 75 =
  5. 5.25 × 6 =
  6. 6.25 × 14 =
  7. 7.15 × 6 =
  8. 8.35 × 14 =
  9. 9.20 × 15 =
  10. 10.26 × 15 =
  11. 11.15 × 14 =
  12. 12.35 × 36 =
  13. 13.16 × 55 =
  14. 14.15 × 32 =
  15. 15.25 × 32 =
  16. 16.40 × 65 =
  17. 17.24 × 55 =
  18. 18.8 × 75 =
  19. 19.6 × 65 =
  20. 20.40 × 55 =
  21. 21.28 × 35 =
  22. 22.24 × 45 =
  23. 23.125 × 30 =
  24. 24.35 × 8 =
  25. 25.18 × 55 =
  26. 26.45 × 40 =
  27. 27.35 × 20 =
  28. 28.22 × 15 =
  29. 29.14 × 125 =
  30. 30.25 × 28 =
  31. 31.25 × 38 =
  32. 32.65 × 18 =
  33. 33.20 × 125 =
  34. 34.12 × 35 =
  35. 35.125 × 30 =
  36. 36.10 × 125 =
  37. 37.28 × 125 =
  38. 38.15 × 38 =
  39. 39.34 × 25 =
  40. 40.75 × 36 =

Answer key

  1. 510
  2. 1050
  3. 650
  4. 600
  5. 150
  6. 350
  7. 90
  8. 490
  9. 300
  10. 390
  11. 210
  12. 1260
  13. 880
  14. 480
  15. 800
  16. 2600
  17. 1320
  18. 600
  19. 390
  20. 2200
  21. 980
  22. 1080
  23. 3750
  24. 280
  25. 990
  26. 1800
  27. 700
  28. 330
  29. 1750
  30. 700
  31. 950
  32. 1170
  33. 2500
  34. 420
  35. 3750
  36. 1250
  37. 3500
  38. 570
  39. 850
  40. 2700

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