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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 8 · 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 × 55 =
  2. 2.22 × 75 =
  3. 3.38 × 35 =
  4. 4.75 × 16 =
  5. 5.45 × 18 =
  6. 6.12 × 25 =
  7. 7.55 × 38 =
  8. 8.75 × 28 =
  9. 9.12 × 15 =
  10. 10.55 × 26 =
  11. 11.75 × 38 =
  12. 12.35 × 28 =
  13. 13.25 × 30 =
  14. 14.18 × 125 =
  15. 15.16 × 125 =
  16. 16.6 × 45 =
  17. 17.16 × 25 =
  18. 18.14 × 55 =
  19. 19.34 × 35 =
  20. 20.40 × 45 =
  21. 21.25 × 28 =
  22. 22.12 × 25 =
  23. 23.65 × 30 =
  24. 24.20 × 35 =
  25. 25.45 × 40 =
  26. 26.55 × 30 =
  27. 27.125 × 12 =
  28. 28.65 × 10 =
  29. 29.30 × 45 =
  30. 30.75 × 22 =
  31. 31.26 × 65 =
  32. 32.26 × 125 =
  33. 33.65 × 14 =
  34. 34.22 × 75 =
  35. 35.8 × 65 =
  36. 36.15 × 20 =
  37. 37.45 × 6 =
  38. 38.75 × 32 =
  39. 39.34 × 75 =
  40. 40.15 × 8 =

Answer key

  1. 660
  2. 1650
  3. 1330
  4. 1200
  5. 810
  6. 300
  7. 2090
  8. 2100
  9. 180
  10. 1430
  11. 2850
  12. 980
  13. 750
  14. 2250
  15. 2000
  16. 270
  17. 400
  18. 770
  19. 1190
  20. 1800
  21. 700
  22. 300
  23. 1950
  24. 700
  25. 1800
  26. 1650
  27. 1500
  28. 650
  29. 1350
  30. 1650
  31. 1690
  32. 3250
  33. 910
  34. 1650
  35. 520
  36. 300
  37. 270
  38. 2400
  39. 2550
  40. 120

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