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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 86 · 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 × 6 =
  2. 2.28 × 75 =
  3. 3.15 × 22 =
  4. 4.22 × 45 =
  5. 5.45 × 28 =
  6. 6.38 × 35 =
  7. 7.65 × 16 =
  8. 8.75 × 6 =
  9. 9.12 × 45 =
  10. 10.125 × 10 =
  11. 11.55 × 26 =
  12. 12.15 × 6 =
  13. 13.24 × 15 =
  14. 14.6 × 15 =
  15. 15.25 × 36 =
  16. 16.15 × 30 =
  17. 17.14 × 75 =
  18. 18.15 × 32 =
  19. 19.25 × 6 =
  20. 20.25 × 38 =
  21. 21.14 × 125 =
  22. 22.36 × 25 =
  23. 23.14 × 55 =
  24. 24.40 × 25 =
  25. 25.22 × 55 =
  26. 26.26 × 25 =
  27. 27.15 × 32 =
  28. 28.20 × 75 =
  29. 29.65 × 38 =
  30. 30.38 × 35 =
  31. 31.65 × 32 =
  32. 32.75 × 8 =
  33. 33.25 × 24 =
  34. 34.35 × 12 =
  35. 35.45 × 8 =
  36. 36.38 × 35 =
  37. 37.45 × 28 =
  38. 38.25 × 6 =
  39. 39.10 × 45 =
  40. 40.6 × 35 =

Answer key

  1. 90
  2. 2100
  3. 330
  4. 990
  5. 1260
  6. 1330
  7. 1040
  8. 450
  9. 540
  10. 1250
  11. 1430
  12. 90
  13. 360
  14. 90
  15. 900
  16. 450
  17. 1050
  18. 480
  19. 150
  20. 950
  21. 1750
  22. 900
  23. 770
  24. 1000
  25. 1210
  26. 650
  27. 480
  28. 1500
  29. 2470
  30. 1330
  31. 2080
  32. 600
  33. 600
  34. 420
  35. 360
  36. 1330
  37. 1260
  38. 150
  39. 450
  40. 210

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