Practice Questions Solution:

Grade 5/6

https://www.cemc.uwaterloo.ca/contests/past_contests/2021/2021BCCContestSolutions5_6.pdf

Grade 7/8

https://www.cemc.uwaterloo.ca/contests/past_contests/2021/2021BCCContestSolutions7_8.pdf

Grade 9/10

https://www.cemc.uwaterloo.ca/contests/past_contests/2021/2021BCCContestSolutions9_10.pdf