Ivan tried to evaluate the expression 6 - 2 + 4 x 9. here is his work:
6 - 2 + 4 x 9
= 6 - 2 + 36
step 1
= 4 + 36
step 2
= 40
step 3
is ivan's work correct?
ewno, ivan made a mistake in step 1. ivan should have subtracted first. the
order of operations says to work from left to right.
no, ivan made a mistake in step 2. ivan should have added before he
subtracted. the order of operations says to add before you subtract.
yes, ivan's work is correct.