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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 118 · 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. 1.40 × 25 =
  2. 2.35 × 28 =
  3. 3.45 × 22 =
  4. 4.25 × 6 =
  5. 5.125 × 16 =
  6. 6.45 × 12 =
  7. 7.8 × 25 =
  8. 8.20 × 125 =
  9. 9.45 × 8 =
  10. 10.28 × 55 =
  11. 11.32 × 35 =
  12. 12.35 × 24 =
  13. 13.25 × 22 =
  14. 14.65 × 10 =
  15. 15.10 × 65 =
  16. 16.12 × 75 =
  17. 17.15 × 10 =
  18. 18.38 × 125 =
  19. 19.26 × 45 =
  20. 20.35 × 26 =
  21. 21.25 × 6 =
  22. 22.35 × 6 =
  23. 23.22 × 15 =
  24. 24.65 × 20 =
  25. 25.35 × 38 =
  26. 26.25 × 24 =
  27. 27.15 × 14 =
  28. 28.22 × 35 =
  29. 29.15 × 6 =
  30. 30.45 × 32 =
  31. 31.45 × 24 =
  32. 32.12 × 75 =
  33. 33.18 × 45 =
  34. 34.24 × 55 =
  35. 35.35 × 26 =
  36. 36.35 × 28 =
  37. 37.35 × 32 =
  38. 38.125 × 26 =
  39. 39.36 × 125 =
  40. 40.30 × 65 =

Answer key

  1. 1000
  2. 980
  3. 990
  4. 150
  5. 2000
  6. 540
  7. 200
  8. 2500
  9. 360
  10. 1540
  11. 1120
  12. 840
  13. 550
  14. 650
  15. 650
  16. 900
  17. 150
  18. 4750
  19. 1170
  20. 910
  21. 150
  22. 210
  23. 330
  24. 1300
  25. 1330
  26. 600
  27. 210
  28. 770
  29. 90
  30. 1440
  31. 1080
  32. 900
  33. 810
  34. 1320
  35. 910
  36. 980
  37. 1120
  38. 3250
  39. 4500
  40. 1950

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