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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 716 · 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. 1.16 × 35 =
  2. 2.38 × 35 =
  3. 3.55 × 16 =
  4. 4.8 × 25 =
  5. 5.6 × 75 =
  6. 6.32 × 55 =
  7. 7.22 × 35 =
  8. 8.25 × 24 =
  9. 9.125 × 12 =
  10. 10.45 × 20 =
  11. 11.15 × 8 =
  12. 12.6 × 65 =
  13. 13.32 × 55 =
  14. 14.14 × 15 =
  15. 15.28 × 45 =
  16. 16.20 × 15 =
  17. 17.12 × 25 =
  18. 18.8 × 125 =
  19. 19.15 × 6 =
  20. 20.65 × 14 =
  21. 21.55 × 36 =
  22. 22.125 × 30 =
  23. 23.16 × 25 =
  24. 24.25 × 36 =
  25. 25.22 × 15 =
  26. 26.25 × 12 =
  27. 27.24 × 15 =
  28. 28.25 × 10 =
  29. 29.25 × 10 =
  30. 30.20 × 65 =
  31. 31.45 × 22 =
  32. 32.30 × 35 =
  33. 33.35 × 12 =
  34. 34.18 × 75 =
  35. 35.25 × 24 =
  36. 36.75 × 16 =
  37. 37.65 × 30 =
  38. 38.12 × 25 =
  39. 39.75 × 40 =
  40. 40.45 × 20 =

Answer key

  1. 560
  2. 1330
  3. 880
  4. 200
  5. 450
  6. 1760
  7. 770
  8. 600
  9. 1500
  10. 900
  11. 120
  12. 390
  13. 1760
  14. 210
  15. 1260
  16. 300
  17. 300
  18. 1000
  19. 90
  20. 910
  21. 1980
  22. 3750
  23. 400
  24. 900
  25. 330
  26. 300
  27. 360
  28. 250
  29. 250
  30. 1300
  31. 990
  32. 1050
  33. 420
  34. 1350
  35. 600
  36. 1200
  37. 1950
  38. 300
  39. 3000
  40. 900

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