Test:
Arithmetic IV - Challenging
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Question 1:
Calculate:
3
7
:
1
4
A
3
28
B
2
4
7
C
5
7
D
1
5
7
Question 2:
Calculate:
7
−
4
1
8
A
2
1
8
B
1
1
8
C
2
7
8
D
3
1
8
Question 3:
Find the greatest common divisor of
(
18
,
45
)
A
3
B
6
C
5
D
9
Question 4:
Find the least common multiple of
(
18
,
45
)
A
45
B
18
C
90
D
9
Question 5:
Calculate:
(
2
3
)
3
(
7
1
2
−
1
6
)
A
1
6
B
2
1
6
C
14
81
D
2
14
81
Question 6:
Find
4
7
of
28
A
10
B
16
C
8
D
20
Question 7:
Calculate:
|
−
3.2
+
0.4
2
|
A
−
30.4
B
−
3.04
C
3.04
D
30.4
Question 8:
Calculate:
0.3
×
100
−
16850
:
1000
A
13.15
B
1.315
C
−
1.315
D
−
13.15
Question 9:
Simplify:
−
9
2
+
8
+
50
A
9
60
B
−
2
2
C
2
2
D
−
9
60
Question 10:
How much the area of a rectangle with the sides
12.5
and
7.2
centimeters is smaller than the area of a square with the sides
11.1
centimeters?
A
33.21
c
m
2
B
3.321
c
m
2
C
3.321
m
2
D
33.21
m
2
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