Tuesday, March 8, 2011

7th grade math

We started a somewhat confusing concept today on algebraic addition.  One thing you can help them with is the idea that if you subtract a negative number, like -(-3), (this is commonly called "adding the opposite" in algebra), or subtract a positive number, like -(4), the number becomes negative, like -3 and -4 from the previous answers.  In the same manner, if you add a negative number, like +(-4), the number also becomes negative, in this case a -4.  Naturally, then, adding a positive number, like +(+5), the number is positive, +5.

Homework is Supplemental Practice problems for L. 64, 66, and 68 found on pages 868-869.

Thanks,
Mrs. W

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