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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 56 · 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. 1.35 × 34 =
  2. 2.45 × 36 =
  3. 3.75 × 14 =
  4. 4.40 × 45 =
  5. 5.65 × 20 =
  6. 6.15 × 26 =
  7. 7.75 × 40 =
  8. 8.35 × 34 =
  9. 9.12 × 125 =
  10. 10.65 × 8 =
  11. 11.30 × 35 =
  12. 12.32 × 55 =
  13. 13.15 × 38 =
  14. 14.65 × 30 =
  15. 15.75 × 16 =
  16. 16.55 × 24 =
  17. 17.6 × 45 =
  18. 18.14 × 75 =
  19. 19.35 × 34 =
  20. 20.32 × 25 =
  21. 21.35 × 38 =
  22. 22.75 × 30 =
  23. 23.38 × 15 =
  24. 24.45 × 12 =
  25. 25.25 × 8 =
  26. 26.18 × 45 =
  27. 27.40 × 45 =
  28. 28.25 × 34 =
  29. 29.8 × 45 =
  30. 30.45 × 26 =
  31. 31.35 × 16 =
  32. 32.18 × 75 =
  33. 33.25 × 6 =
  34. 34.35 × 38 =
  35. 35.65 × 14 =
  36. 36.65 × 30 =
  37. 37.65 × 14 =
  38. 38.28 × 45 =
  39. 39.25 × 6 =
  40. 40.65 × 32 =

Answer key

  1. 1190
  2. 1620
  3. 1050
  4. 1800
  5. 1300
  6. 390
  7. 3000
  8. 1190
  9. 1500
  10. 520
  11. 1050
  12. 1760
  13. 570
  14. 1950
  15. 1200
  16. 1320
  17. 270
  18. 1050
  19. 1190
  20. 800
  21. 1330
  22. 2250
  23. 570
  24. 540
  25. 200
  26. 810
  27. 1800
  28. 850
  29. 360
  30. 1170
  31. 560
  32. 1350
  33. 150
  34. 1330
  35. 910
  36. 1950
  37. 910
  38. 1260
  39. 150
  40. 2080

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