sirs, how would you solve this?
>>16873722is this with positive integers only or something?
>>1687372240 = 10 - 50 - 25 = 25 = 5 + 20 - -20 = 40
Why do these types of problems always fucks up the nomenclature?
who the fuck writes additions and subtractions like this ? this is fucking retarded for retards sake
>>16873722I can't tell in what directions I should be reading those subtractions. Left to right? Top to bottom? Center to result, i.e. the equals sign at the end?
>>16874020Grade four teachers usually are not very knowledgeable about maths themselves, even if they are the maths teacher. Whoever made this was operating off their own head canon of how mathematical rules work. No doubt they felt innovative for having come up with a new way to "engage" students in math instead of being straightforward about it. This is the type of thing that arises in cultures that believe creativity and out-of-the-box thinking trump understanding and rigor.
>>16873722simple, just cut out the middle man:40 = 25
