Question

Use order of operations to choose all of the expressions that are correctly solved.

(8 + 7) ÷ 3 = 5

(4 × 5) − 3 = 8

(4 × 5) − 3 = 17

14 − 7 × 2 = 0

14 − 7 × 2 = 14

12 + (7 + 9) = 28

Answer 1

1. correct

2. not correct

3.correct

4.correct

5. not correct

6. correct

Explanation:

P(parenthesis) E(exponents) M(multiplication) D(division) A(addition) S(subtraction)

You first solve what is in the parenthesis (if there is any) than make your way down this list IN ORDER until you hit subtraction.

1.

`(8+7)/3=5\\\\(15)/3=5\\5=5`

2.

(4 × 5) − 3 = 8

Parenthesis first

(20)-3=8

subtract

17=8

3.

(4 × 5) − 3 = 17

Do what is in parenthesis first

(20)-3=17

subtract

17=17

4.

14 − 7 × 2 = 0

Multiply 7*2 first

14-14=0

subtract

0=0

5.

14 − 7 × 2 = 14

Multiply 7*2 first

14-14=14

subtract

0=14

6.

12 + (7 + 9) = 28

Parenthesis first

12+(16)=28

Add

28=28

Answer 2

1.) yes
2.) no
3.) yes
4.) yes
5.) yes