Comment on I dunno

• SmartmanApps@programming.dev ⁨5⁩ ⁨days⁩ ago

  order of appearance is ‘the rule’ when commutative properties apply

  That’s because students often make mistakes with signs when they do it in a different order, so we tell them to stick to left to right

  source
• SpaceCadet@feddit.nl ⁨3⁩ ⁨weeks⁩ ago

  something has to be the rule for processing it

  Well the rule is: any order goes. Summation is commutative.

  source

  • MotoAsh@piefed.social ⁨3⁩ ⁨weeks⁩ 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.

    source
  • Quatlicopatlix@feddit.org ⁨3⁩ ⁨weeks⁩ 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

    source