Comment on I dunno
MotoAsh@piefed.social 4 days agoTrue, but as with many things, something has to be the rule for processing it. For many teachers as I’ve heard, order of appearance is ‘the rule’ when commutative properties apply. … at least until algebra demands simplification, but that’s a different topic.
SpaceCadet@feddit.nl 4 days ago
Well the rule is: any order goes. Summation is commutative.
MotoAsh@piefed.social 3 days ago
No, you completely misunderstood my point. My point is not to describe all valid interpretations, but the one most slow kids will be taught.
Quatlicopatlix@feddit.org 3 days ago
Yes thank you! If you have a sum it is really great to order it in a way that makes it better to ad in your head and i think that lots of people do that without thinking about it. X=2+3+1+6+2+4+7+5 X=2+3+5+4+6+7+1+2 X=5+5 + 10 +7+1+2 X=10 + 10 + 7+3 X=10 + 10 + 10