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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 696 · 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 × 14 =
  2. 2.15 × 6 =
  3. 3.38 × 25 =
  4. 4.75 × 38 =
  5. 5.65 × 36 =
  6. 6.30 × 55 =
  7. 7.28 × 55 =
  8. 8.8 × 45 =
  9. 9.26 × 25 =
  10. 10.12 × 65 =
  11. 11.8 × 125 =
  12. 12.15 × 8 =
  13. 13.15 × 36 =
  14. 14.45 × 20 =
  15. 15.26 × 65 =
  16. 16.55 × 12 =
  17. 17.28 × 55 =
  18. 18.75 × 6 =
  19. 19.18 × 25 =
  20. 20.8 × 45 =
  21. 21.75 × 36 =
  22. 22.28 × 35 =
  23. 23.45 × 38 =
  24. 24.20 × 15 =
  25. 25.125 × 32 =
  26. 26.6 × 15 =
  27. 27.22 × 75 =
  28. 28.28 × 25 =
  29. 29.10 × 65 =
  30. 30.35 × 36 =
  31. 31.14 × 55 =
  32. 32.20 × 55 =
  33. 33.16 × 35 =
  34. 34.25 × 38 =
  35. 35.10 × 65 =
  36. 36.125 × 10 =
  37. 37.25 × 16 =
  38. 38.75 × 8 =
  39. 39.40 × 15 =
  40. 40.25 × 40 =

Answer key

  1. 1050
  2. 90
  3. 950
  4. 2850
  5. 2340
  6. 1650
  7. 1540
  8. 360
  9. 650
  10. 780
  11. 1000
  12. 120
  13. 540
  14. 900
  15. 1690
  16. 660
  17. 1540
  18. 450
  19. 450
  20. 360
  21. 2700
  22. 980
  23. 1710
  24. 300
  25. 4000
  26. 90
  27. 1650
  28. 700
  29. 650
  30. 1260
  31. 770
  32. 1100
  33. 560
  34. 950
  35. 650
  36. 1250
  37. 400
  38. 600
  39. 600
  40. 1000

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