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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 295 · 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. 1.6 × 75 =
  2. 2.15 × 22 =
  3. 3.35 × 6 =
  4. 4.24 × 65 =
  5. 5.34 × 125 =
  6. 6.32 × 75 =
  7. 7.28 × 45 =
  8. 8.25 × 12 =
  9. 9.45 × 20 =
  10. 10.55 × 32 =
  11. 11.14 × 65 =
  12. 12.22 × 15 =
  13. 13.75 × 26 =
  14. 14.65 × 10 =
  15. 15.14 × 125 =
  16. 16.125 × 22 =
  17. 17.65 × 26 =
  18. 18.18 × 75 =
  19. 19.16 × 15 =
  20. 20.32 × 45 =
  21. 21.12 × 125 =
  22. 22.14 × 15 =
  23. 23.16 × 15 =
  24. 24.26 × 125 =
  25. 25.18 × 55 =
  26. 26.40 × 35 =
  27. 27.55 × 20 =
  28. 28.16 × 35 =
  29. 29.32 × 125 =
  30. 30.125 × 14 =
  31. 31.25 × 28 =
  32. 32.36 × 15 =
  33. 33.35 × 10 =
  34. 34.8 × 65 =
  35. 35.18 × 55 =
  36. 36.75 × 22 =
  37. 37.38 × 15 =
  38. 38.18 × 35 =
  39. 39.18 × 65 =
  40. 40.25 × 26 =

Answer key

  1. 450
  2. 330
  3. 210
  4. 1560
  5. 4250
  6. 2400
  7. 1260
  8. 300
  9. 900
  10. 1760
  11. 910
  12. 330
  13. 1950
  14. 650
  15. 1750
  16. 2750
  17. 1690
  18. 1350
  19. 240
  20. 1440
  21. 1500
  22. 210
  23. 240
  24. 3250
  25. 990
  26. 1400
  27. 1100
  28. 560
  29. 4000
  30. 1750
  31. 700
  32. 540
  33. 350
  34. 520
  35. 990
  36. 1650
  37. 570
  38. 630
  39. 1170
  40. 650

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