I'm not a teacher but looking at the lesson it appears that it is just not about solving the problem of: 3x8
It allows the student to begin to learn the process of equations in algebra.
It allows the student to reflect on how else to find the answer of 3x8, for example the following as 3 rows of 8 is 24 but it can be broken down to different other ways such as 3x4 +3x4 =
12 + 12 = 24
8 4 4
******** @@@@ @@@@
3******** 3 @@@@ + 3 @@@@ = 24
******** @@@@ @@@@
I can understand the mental part of breaking down the problem, but seems like it's such a waste of time.
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find each product
85+34+15+16
You had me until "product." The product of 4 digits can't be prime.
You substitute the value of the variable into the quadratic equation and evaluate the expression.
to find a power of a product you add the exponents