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CBSE Questions for Class 7 Maths Fractions And Decimals Quiz 3 - MCQExams.com
CBSE
Class 7 Maths
Fractions And Decimals
Quiz 3
Improper fraction of
12
1
6
is
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0%
72
6
0%
73
6
0%
108
6
0%
85
6
Explanation
W
N
×
D
+
N
D
12
×
6
+
1
6
=
72
+
1
6
=
73
6
Mixed fraction for
39
12
is
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0%
3
1
12
0%
3
2
12
0%
3
3
12
0%
2
14
12
Explanation
To convert an improper fraction to a mixed fraction, we divide the numerator by the denominator, then write down the whole number answer. Finally, we write down any remainder above the denominator.
So, in this case when
39
is divided by
12
then it leaves the remainder equal to
3
and the quotient is
3
as well.
39
12
=
3
3
12
So, option
C
is correct.
Sum of
0.3
,
0.03
and
0.003
is _____
Report Question
0%
0.999
0%
0.393
0%
0.636
0%
0.333
Explanation
To add
3
decimal numbers of different decimal values we pick the number with the highest decimal value and expand all the other numbers to the same value by adding
0
after the decimal point.
0.300
+
0.030
+
0.003
=
0.333
So option D is the correct answer!
Product of 78.12 and 1.5 is
Report Question
0%
117.81
0%
117.18
0%
117.32
0%
117.80
Explanation
78.12
×
1.5
=
7812
×
15
1000
=
117180
1000
=
117.18
Example for a proper fraction is ____
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0%
28
13
0%
11
23
0%
16
9
0%
14
3
Explanation
A proper fraction is a fraction that is less than one, with the numerator less than the denominator.
The only fraction with the numerator less than the denominator in the given options is
11
23
.
So option B is the correct answer.
Example for an improper fraction is
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0%
25
26
0%
12
13
0%
15
14
0%
19
20
Explanation
An improper fraction is a fraction that has a larger number on the top than on the bottom.
The number on the top of the fraction is a numerator and the number on the bottom is a denominator.
Therefore, an improper fraction has a greater numerator than the denominator.
The only option with the numerator greater than the denominator is option C
15
14
So, option C is the correct answer.
Expanded form of 78.059 is
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0%
78
+
5
10
+
9
100
0%
70
+
8
+
0
+
5
100
+
9
1000
0%
70
+
8
+
5
10
+
9
100
0%
none of these
Explanation
The number system has places. We all know the ones tens hundredths places.
After decimal the first decimal digit from the decimal point is the tenth, the second decimal digit from the decimal point is the hundredth and the third decimal digit from the decimal point is the thousandths digit.
Read the whole set of three decimal digits as a number, and say, "tenths", "hundredths" and “thousandths.” 78.059 has 0 tenths, 5 hundredths, and 9 thousandths.
While 78.059 is the sum of
70
+
8
+
0
10
+
5
100
+
9
1000
.
So option B is the correct answer.
Evaluate:
25
+
3
100
+
4
1000
=
_________
Report Question
0%
25.34
0%
25.304
0%
25.034
0%
25.0034
Explanation
5
+
3
100
+
4
1000
=
25
+
0.03
+
0.004
=
25.034
The cost of 1 lit. of milk is Rs. 7.50 then the cost of 30.5 lit. of milk is
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0%
Rs. 225.75
0%
Rs. 223.75
0%
Rs. 228.75
0%
none
Explanation
The cost of 1 lit. of milk is Rs. 7.50 .
The cost of 30.5 lit. of milk is
7.50
×
30.5
=
R
s
.228
.75
If
0.111
is approximately equal to
1
9
, then the approximate value of
0.777
is
Report Question
0%
5
9
0%
7
9
0%
2
9
0%
1
9
Explanation
We will find the value of
0.777
by expressing it in terms of
0.111.
0.777
=
7
×
0.111
=
7
×
1
9
=
7
9
Hence, option
B
is correct.
143.6
÷
2000
=
.
.
.
.
.
.
.
.
.
.
.
.
.
Report Question
0%
0.1718
0%
7.18
0%
0.718
0%
0.0718
Explanation
143.6
÷
2000
=
71.8
÷
1000
=
0.0718
Which of the following is an improper fraction?
Report Question
0%
15
1
0%
1
3
0%
2
3
0%
none of the above
Explanation
Since numerator > denominator only in option
A
.
Therefore, it is correct.
Sum of 0.5, 12.56 and 0.003 is
Report Question
0%
13.063
0%
31.063
0%
12.063
0%
none of these
Explanation
We know that to add numbers with different decimal places we expand all the numbers to the same decimal places by expanding zeroes.
So, the sum of 0.5 ,12.56 and 0.003
is
0.500+12.560+0.003 =13.063
Hence, the answer is 13.063
So, option A is the correct answer.
Divide
150.75
÷
0.6
Report Question
0%
251.25
0%
2512.5
0%
25125
0%
25.125
Explanation
150.75
÷
0.6
⇒
150.75
0.6
=
150.75
×
10
0.6
×
10
=
1507.5
6
=
251.25
Convert
13
7
into a mixed fraction.
Report Question
0%
1
6
7
0%
2
3
7
0%
3
0
7
0%
3
5
7
Explanation
Divide
13
by
7
. The quotient is
1
and remainder is
6
.
∴
13
7
=
1
6
7
So, option A is correct.
Improper fraction of
12
1
6
is
Report Question
0%
72
6
0%
73
6
0%
108
6
0%
85
6
Explanation
W
N
×
D
+
N
D
12
×
6
+
1
6
=
72
+
1
6
=
73
6
Which of the following is improper fraction?
Report Question
0%
1
3
0%
4
3
0%
3
5
0%
none of the above
Explanation
A fraction in which the numerator is greater than
the denominator is called an improper fraction.
∴
4
3
is correct.
0.002
×
0.5
=
?
Report Question
0%
0.0001
0%
0.001
0%
0.01
0%
0.1
Explanation
2
×
5
=
10
.
Sum of decimal places
=
4
∴
0.002
×
0.5
=
0.001
Which of the following is closest to
27.8
×
9.6
?
Report Question
0%
280
0%
300
0%
2
,
800
0%
3
,
000
Explanation
27.8
×
9.6
=
Multiplying the numbers without decimals at first.
278
×
96
____________
1668
+
2502
____________
26688
____________
8
×
6
=
48
7
×
6
=
42
6
×
2
=
12
9
×
8
=
72
9
×
7
=
63
9
×
2
=
18
Then putting decimals, we get
266.88
The number is closer to
280
Answer: (A)
280
.
2.75
+
0.003
+
0.158
=
Report Question
0%
4.36
0%
2.911
0%
0.436
0%
2.938
Explanation
2.75
=
0.003
+
0.158
=
Write all decimal numbers in correct order in such a way that the numbers come in correct row.
2.750
0.003
0.158
_________
2.911
_________
IV III II I
I
→
8
+
3
+
0
=
11
{
1
balance
}
II
→
1
+
5
+
0
+
5
=
11
{
1
balance
}
III
→
1
+
7
+
0
+
1
=
9
IV
→
2
+
0
+
0
=
2
.
4.036
divided by
0.04
gives:
Report Question
0%
1.009
0%
10.09
0%
100.9
0%
None of these
Explanation
4.036
0.04
=
403.6
4
=
100.9
Which of the following is a proper fraction?
Report Question
0%
1
1
3
0%
5
4
0%
2
3
0%
None of these
Explanation
We know that, a proper fraction is a fraction where the numerator is less than the denominator.
Since numerator
<
denominator in
2
3
, it is a proper fraction.
Hence, option C is correct.
247
+
2.047
+
0.247
+
2.0047
=
?
Report Question
0%
267.2963
0%
262.965
0%
229.6357
0%
None of these
Multiply:
24
×
12.23
Report Question
0%
123.36
0%
236.56
0%
293.52
0%
2935.2
Explanation
Multiplying and dividing by
100
we get
24
×
12.23
=
(
24
×
1223
)
÷
100
=
293.52
Which of the following is/are improper fraction(s)?
Report Question
0%
21
20
0%
23
24
0%
14
15
0%
None of the above
Explanation
Here, Numerator
>
denominator only in option
A
.
Hence, option
A
is correct.
Perform following operation
1234.46
÷
8
Report Question
0%
15430.75
0%
15403.075
0%
154.3075
0%
15.43075
Explanation
Multiplying and dividing by
100
we get
1234.46
÷
8
=
(
123446
÷
8
)
÷
100
=
154.3075
Divide:
12.36
÷
12
Report Question
0%
1.3
0%
1.03
0%
13
0%
0.13
Explanation
Multiplying and dividing by
100
we get
12.36
÷
12
=
(
1236
÷
12
)
÷
100
=
1.03
Divide:
105.55
÷
5
Report Question
0%
21.11
0%
2.111
0%
0.211
0%
211.1
Explanation
Multiplying and dividing by
100
we get
105.55
÷
5
=
(
10555
÷
5
)
÷
100
=
21.11
Evaluate:
25.25
÷
2.5
Report Question
0%
1.001
0%
11
0%
1.1
0%
10.1
Explanation
Multiplying and dividing by
10
we get
25.25
÷
2.5
=
(
2525
÷
25
)
÷
10
=
10.1
Evaluate:
2446.83
÷
3.1
Report Question
0%
244.1
0%
789.3
0%
78.93
0%
7.893
Explanation
Multiplying and dividing by
100
we get
2446.83
÷
3.1
=
(
244683
÷
31
)
÷
10
=
789.3
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