Patti is using mental math to evaluate the expression open paren 70 plus 12 point 8 plus 30 close paren plus 6 point 1 She recognizes that the expression will be easier to simplify if she can combine 70 and 30 before she works with the other numbers. Which should she do first?
Answer
A
She can use the associative property to rewrite the expression as open paren 70 plus 30 close paren plus 12 point 8 plus 6 point 1 .
B
She can use the associative property to rewrite the expression as open paren 70 plus 30 plus 12 point 8 close paren plus 6 point 1 .
C
She can use the commutative property to rewrite the expression as open paren 70 plus 30 plus 12 point 8 close paren plus 6 point 1 .
D
She can use the commutative property to rewrite the expression as open paren 70 plus 30 close paren plus 12 point 8 plus 6 point 1 .