What is the first step in evaluating this expression?

Question

15
+
20
÷
(
10
−
7
)
+
12
A.
Subtract 7 from 10.

B.
Divide 20 by 10.

C.
Add 15 and 20.

D.
Add 7 and 12.

Answer 1

B. Divide 20 by 10.

Answer 2

Which statement is true?

A.
25
−
15
×
4
−
3
×
2
=
30
B.
24
−
15
×
(
4
−
3
)
×
2
=
30
C.
(
24
−
15
)
×
4
−
3
×
2
=
30
D.
(
24
−
15
)
×
4
−
3
×
2
=
66

Answer 3

D. (24 − 15) × 4 − 3 × 2 = 66