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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 176 · 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. 1.55 × 26 =
  2. 2.20 × 25 =
  3. 3.65 × 10 =
  4. 4.10 × 25 =
  5. 5.36 × 55 =
  6. 6.25 × 12 =
  7. 7.10 × 125 =
  8. 8.125 × 28 =
  9. 9.12 × 45 =
  10. 10.36 × 65 =
  11. 11.34 × 35 =
  12. 12.45 × 14 =
  13. 13.36 × 125 =
  14. 14.55 × 12 =
  15. 15.38 × 45 =
  16. 16.35 × 10 =
  17. 17.18 × 125 =
  18. 18.8 × 75 =
  19. 19.35 × 6 =
  20. 20.55 × 26 =
  21. 21.32 × 65 =
  22. 22.15 × 10 =
  23. 23.45 × 22 =
  24. 24.10 × 125 =
  25. 25.36 × 55 =
  26. 26.14 × 45 =
  27. 27.35 × 30 =
  28. 28.65 × 12 =
  29. 29.45 × 26 =
  30. 30.32 × 75 =
  31. 31.75 × 14 =
  32. 32.38 × 25 =
  33. 33.16 × 25 =
  34. 34.75 × 8 =
  35. 35.65 × 24 =
  36. 36.55 × 32 =
  37. 37.28 × 45 =
  38. 38.28 × 25 =
  39. 39.45 × 22 =
  40. 40.8 × 125 =

Answer key

  1. 1430
  2. 500
  3. 650
  4. 250
  5. 1980
  6. 300
  7. 1250
  8. 3500
  9. 540
  10. 2340
  11. 1190
  12. 630
  13. 4500
  14. 660
  15. 1710
  16. 350
  17. 2250
  18. 600
  19. 210
  20. 1430
  21. 2080
  22. 150
  23. 990
  24. 1250
  25. 1980
  26. 630
  27. 1050
  28. 780
  29. 1170
  30. 2400
  31. 1050
  32. 950
  33. 400
  34. 600
  35. 1560
  36. 1760
  37. 1260
  38. 700
  39. 990
  40. 1000

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