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Montgomery County Public Schools (MCPS)
Reply to "Math 2.0 Subtraction-Decomposing -- HELP"
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[quote=Anonymous][quote=Anonymous]this is ridiculous. Can we just subtract the normal way?!?!? I have 2 engineering degrees, work as an engineer, got great scores on the math SAT, got 5 on the AP calculus test and the normal way with borrowing, etc. has served me well. [/quote] No, they don't do it the normal way anymore because lots of curriculum people are employed by thinking of new ways to do things in a more complicated way :) My son is in 2nd grade and his head is spinning with all of the zillion strategies for adding one digit numbers. Poor kid can't just say he knows what 4+5 equals. He has to use a strategy like doubles plus one or doubles minus one. He wrote "I just know it" on his test and he got that part of the question wrong. Seriously. [/quote]
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