So...I'm helping Desmond out with his math homework. The question is simple:
3 + 4 = ?
Desmond looks at the question and then asks me, "Dad...what's 10 minus 3?
I say, "Seven."
Desmond writes 7 as the answer to 3 + 4.
Correct answer right?
But, wait...I say, "I don't get what you just did. That's the right answer, but I don't understand why you asked me what 10 minus 3 is."
"BECAUSE!" Desmond says, hating to have to explain something to a simpleton like myself.
"Because why?" I ask. "How did you know that 3 + 4 = 7 by asking what 10 minus 3 is?"
"Easy!" he replies. "Because 4 plus 6 is 10. So, all I needed to do was take 3 away which makes 7. That's how I got it."
Huh? What the heck just happened? Everything he just said is correct. But...what does 10-3 have to do with 4+3?
My head hurts.
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2 comments:
Time to pull out your trusty 10 frame and wrap you mind around this.
glad I don't have to fight this problem.
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