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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 443 · 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. 1.75 × 16 =
  2. 2.35 × 30 =
  3. 3.65 × 14 =
  4. 4.25 × 28 =
  5. 5.38 × 125 =
  6. 6.125 × 14 =
  7. 7.15 × 12 =
  8. 8.26 × 45 =
  9. 9.75 × 32 =
  10. 10.25 × 22 =
  11. 11.18 × 35 =
  12. 12.20 × 25 =
  13. 13.28 × 15 =
  14. 14.35 × 14 =
  15. 15.45 × 28 =
  16. 16.16 × 15 =
  17. 17.65 × 30 =
  18. 18.65 × 28 =
  19. 19.75 × 12 =
  20. 20.26 × 125 =
  21. 21.35 × 24 =
  22. 22.125 × 38 =
  23. 23.10 × 55 =
  24. 24.35 × 36 =
  25. 25.75 × 14 =
  26. 26.45 × 38 =
  27. 27.45 × 30 =
  28. 28.8 × 75 =
  29. 29.40 × 45 =
  30. 30.30 × 25 =
  31. 31.65 × 22 =
  32. 32.15 × 14 =
  33. 33.12 × 25 =
  34. 34.35 × 22 =
  35. 35.45 × 14 =
  36. 36.34 × 125 =
  37. 37.15 × 30 =
  38. 38.75 × 36 =
  39. 39.8 × 25 =
  40. 40.22 × 25 =

Answer key

  1. 1200
  2. 1050
  3. 910
  4. 700
  5. 4750
  6. 1750
  7. 180
  8. 1170
  9. 2400
  10. 550
  11. 630
  12. 500
  13. 420
  14. 490
  15. 1260
  16. 240
  17. 1950
  18. 1820
  19. 900
  20. 3250
  21. 840
  22. 4750
  23. 550
  24. 1260
  25. 1050
  26. 1710
  27. 1350
  28. 600
  29. 1800
  30. 750
  31. 1430
  32. 210
  33. 300
  34. 770
  35. 630
  36. 4250
  37. 450
  38. 2700
  39. 200
  40. 550

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