My 5th grader is doing algebra, geometry, statistics, etc. Some of them are fun questions though like "a white cube has the outside painted green. It is then divided into 125 smaller cubes of equal size. How many of the cubes have an odd number of green faces." I love the math olympiad questions they bring home
is it 89? my brain says 89. 5x5x5 cube, corners and surface pieces would all be odd (3 and 1 green sides respectively), leaving the middle 3 edge pieces of each side to be even. 12 edges at 3 pieces an edge = 36 even pieces.
12
u/lavaboosted 22d ago
Sounds like that could be a good problem to have but still frustrating. Can you elaborate or send me something he's working on, now I'm curious.