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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 206 · 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. 2.30 × 35 =
  3. 3.12 × 25 =
  4. 4.26 × 25 =
  5. 5.32 × 65 =
  6. 6.38 × 35 =
  7. 7.125 × 38 =
  8. 8.35 × 16 =
  9. 9.10 × 125 =
  10. 10.34 × 45 =
  11. 11.35 × 30 =
  12. 12.36 × 25 =
  13. 13.45 × 22 =
  14. 14.36 × 35 =
  15. 15.75 × 18 =
  16. 16.35 × 8 =
  17. 17.36 × 25 =
  18. 18.125 × 28 =
  19. 19.30 × 125 =
  20. 20.55 × 40 =
  21. 21.35 × 20 =
  22. 22.15 × 6 =
  23. 23.45 × 36 =
  24. 24.30 × 55 =
  25. 25.22 × 35 =
  26. 26.32 × 35 =
  27. 27.14 × 15 =
  28. 28.45 × 8 =
  29. 29.40 × 55 =
  30. 30.65 × 26 =
  31. 31.45 × 38 =
  32. 32.125 × 22 =
  33. 33.32 × 25 =
  34. 34.65 × 34 =
  35. 35.65 × 32 =
  36. 36.22 × 35 =
  37. 37.6 × 65 =
  38. 38.35 × 36 =
  39. 39.45 × 22 =
  40. 40.24 × 65 =

Answer key

  1. 1190
  2. 1050
  3. 300
  4. 650
  5. 2080
  6. 1330
  7. 4750
  8. 560
  9. 1250
  10. 1530
  11. 1050
  12. 900
  13. 990
  14. 1260
  15. 1350
  16. 280
  17. 900
  18. 3500
  19. 3750
  20. 2200
  21. 700
  22. 90
  23. 1620
  24. 1650
  25. 770
  26. 1120
  27. 210
  28. 360
  29. 2200
  30. 1690
  31. 1710
  32. 2750
  33. 800
  34. 2210
  35. 2080
  36. 770
  37. 390
  38. 1260
  39. 990
  40. 1560

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