Made no sense to me, till I looked at some answers. I think the First statement, should been, "IF 3 apples = 30" ; I might have caught on earlier. And 14 is correct!
Guess im getn old. A friend tried to explain how his kids were being taught. Sounded like the stupidest shit id heard. I looked at this as an algebraic equation
X +x+ x=30
x + 4y +4y = 18
4y-2z=2
I have never been so pissed at common core as the other day with my 5th grader. She needed help dividing by fractions. PIECE OF CAKE!!!! I loved that stuff when I was her age. Multiply by the inverse of the fraction.... DONE!
Wrong!!!!!!!!!!!!!!!!!!!!!!!!!!! They now have a whole mess of methods and pictures to draw and "strategies" to do the SIMPLEST of math. She was so confused and so was I. I told her just to do my method and if the teacher had a problem with it, call me. Teacher was cool with it (she's about my age and hates common core, too - but is forced to teach it)