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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 134 · 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. 1.12 × 35 =
  2. 2.125 × 30 =
  3. 3.15 × 38 =
  4. 4.26 × 15 =
  5. 5.36 × 15 =
  6. 6.55 × 8 =
  7. 7.34 × 25 =
  8. 8.8 × 35 =
  9. 9.45 × 30 =
  10. 10.26 × 65 =
  11. 11.25 × 8 =
  12. 12.30 × 25 =
  13. 13.15 × 8 =
  14. 14.65 × 20 =
  15. 15.38 × 45 =
  16. 16.22 × 35 =
  17. 17.35 × 26 =
  18. 18.65 × 8 =
  19. 19.15 × 14 =
  20. 20.35 × 32 =
  21. 21.55 × 6 =
  22. 22.36 × 125 =
  23. 23.45 × 18 =
  24. 24.75 × 8 =
  25. 25.65 × 22 =
  26. 26.8 × 75 =
  27. 27.24 × 15 =
  28. 28.16 × 75 =
  29. 29.36 × 45 =
  30. 30.55 × 24 =
  31. 31.38 × 75 =
  32. 32.12 × 25 =
  33. 33.6 × 25 =
  34. 34.6 × 25 =
  35. 35.30 × 15 =
  36. 36.32 × 75 =
  37. 37.40 × 55 =
  38. 38.28 × 35 =
  39. 39.55 × 28 =
  40. 40.15 × 40 =

Answer key

  1. 420
  2. 3750
  3. 570
  4. 390
  5. 540
  6. 440
  7. 850
  8. 280
  9. 1350
  10. 1690
  11. 200
  12. 750
  13. 120
  14. 1300
  15. 1710
  16. 770
  17. 910
  18. 520
  19. 210
  20. 1120
  21. 330
  22. 4500
  23. 810
  24. 600
  25. 1430
  26. 600
  27. 360
  28. 1200
  29. 1620
  30. 1320
  31. 2850
  32. 300
  33. 150
  34. 150
  35. 450
  36. 2400
  37. 2200
  38. 980
  39. 1540
  40. 600

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