Thursday, September 15, 2011

"Hidden" Multiplication

Ok, we're going to begin weening you off of using "x" to represent multiplication in preparation for working with variables in algebra.
Examples:

* We can represent 5 x (5+3) by just getting rid of the "x" multiplication symbol and snuggling the 5 right up on the addition problem in the parenthesis. So it would look like this: 5(5+3)
or five multiplied by the sum of three and 5. Thus, the multiplication symbol is "hidden."

With "x"
and then without
5x5 = (5)(5)
5 x (4-2) = 5(4-2)
5x(10) = (5)(10)

Remember, the order of operations still applies so in the second example in the columns you would have to find the difference BEFORE multiplying.
Good luck!

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