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kbanford
kbanford asks:
Q:

how  to solve pan balance math problems

 If you have 2 cubes and 2 triangles in one pan then on the other pan there are 8 cubes, one triangle weighs as much as ? cubes
In Topics: Helping my child with math
> 60 days ago

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Answers (1)

cowetatransplant
cowetatrans... writes:
I always teach this as trying to get rid of the same things on both sides of the equal sign.  You have at least 2 cubes on both sides, so you can get rid of those.  Now you have 2 triangles and 6 cubes left.  All you have to do is figure out how much each triangle is worth.  If 2 triangles are worth 6 cubes, 1 triangle is worth 3 cubes.  If you plug it back into the problem you have 2 cubes + 3 cubes + 3 cubes = 8 cubes.
> 60 days ago

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