Pre-Algebra - Order Of Operations

Tools: pointer cross off highlighter pencil eraser

DIRECTIONS: Click on the box to choose the correct expression(s). You must select all the correct expressions for credit.

Christine was asked to simplify the given expression and you must verify her answer.

Determine the first two steps Christine should use to simplify:

$16+4(3+8)^2-21$

$16+12+8^2-21$

$16+12+64-21$

$16+4(121)-21$

$16+4(67)-21$

$16+44^2-21$

$16+4(3+64)-21$

$20(11)^2-21$

$16+4(11)^2-21$

$20(3+8)^2-21$