1.
Evaluate (4 + 5) ÷ 3 × 2 + (2
2
- 1).
A.
18
B.
9
C.
D.
10
Hint
2.
Evaluate 2
c
- 4
k
if
c
= 16 and
k
= 5.
A.
12
B.
52
C.
18
D.
16
Hint
3.
Evaluate 2
3
+ 5 × (6 + 4) ÷ 2.
A.
65
B.
108
C.
33
D.
41
Hint
4.
Evaluate (3 + 10 ÷ 2 – 6 + 18) ÷ 2
2
.
A.
4.625
B.
5
C.
10
D.
6.5
Hint
5.
Which is a counterexample for the following statement?
The difference of two odd numbers is an odd number
.
A.
15 – 4 = 11
B.
15 - 7 = 8
C.
12 – 5 = 7
D.
7 + 9 = 16
Hint