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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 684 · 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. 1.25 × 26 =
  2. 2.26 × 75 =
  3. 3.8 × 55 =
  4. 4.34 × 65 =
  5. 5.35 × 38 =
  6. 6.26 × 25 =
  7. 7.40 × 65 =
  8. 8.38 × 15 =
  9. 9.45 × 36 =
  10. 10.16 × 75 =
  11. 11.34 × 75 =
  12. 12.55 × 16 =
  13. 13.75 × 28 =
  14. 14.45 × 10 =
  15. 15.18 × 15 =
  16. 16.18 × 45 =
  17. 17.34 × 55 =
  18. 18.38 × 55 =
  19. 19.15 × 38 =
  20. 20.12 × 55 =
  21. 21.45 × 18 =
  22. 22.45 × 26 =
  23. 23.15 × 38 =
  24. 24.15 × 10 =
  25. 25.55 × 12 =
  26. 26.45 × 20 =
  27. 27.24 × 15 =
  28. 28.12 × 35 =
  29. 29.55 × 36 =
  30. 30.55 × 16 =
  31. 31.45 × 12 =
  32. 32.25 × 24 =
  33. 33.75 × 30 =
  34. 34.32 × 45 =
  35. 35.32 × 125 =
  36. 36.36 × 45 =
  37. 37.75 × 32 =
  38. 38.45 × 8 =
  39. 39.18 × 45 =
  40. 40.40 × 25 =

Answer key

  1. 650
  2. 1950
  3. 440
  4. 2210
  5. 1330
  6. 650
  7. 2600
  8. 570
  9. 1620
  10. 1200
  11. 2550
  12. 880
  13. 2100
  14. 450
  15. 270
  16. 810
  17. 1870
  18. 2090
  19. 570
  20. 660
  21. 810
  22. 1170
  23. 570
  24. 150
  25. 660
  26. 900
  27. 360
  28. 420
  29. 1980
  30. 880
  31. 540
  32. 600
  33. 2250
  34. 1440
  35. 4000
  36. 1620
  37. 2400
  38. 360
  39. 810
  40. 1000

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