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CBSE 7th Social Science Theme E - Understanding Market - New Sample Question Papers Study Material - QB365 Set A
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CBSE 7th Social Science Theme D - The Constitution of India- An Introduction - New Sample Question Papers Study Material - QB365 Set A
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CBSE 7th Social Science Theme D - From the Rulers to the Ruled : Types of Governments - New Sample Question Papers Study Material - QB365 Set A
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Published on: 24/08/2019
Fractions and Decimals
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Questions + Answers key
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1.
A reciprocal of a fraction is obtained by inverting it upside down
2.
The reciprocal of an improper fraction is an improper fraction
3.
\(\frac { 1 }{ 4 } \) of \(\frac { 1 }{ 7 } \) is equal to 28
4.
To divide a decimal number by 1000, we have the decimal point in the number to the left by three places.
5.
1 is the only number which has its own reciprocal.
6.
Which of the following is an improper fraction?
\(\frac{2}{7}\)
\(\frac{1}{2}\)
\(\frac{2}{3}\)
\(\frac{73}{10}\)
7.
Number of mil/ilitres of a litre is:
10
100
1000
\(\frac{1}{1000}\)
8.
When the product of two fractions is unity, each is called the:
denominator of the other
numerator of the other
additive inverse of the other
reciprocal of the other
9.
One packet of biscuits requires 2\(\frac { 1 }{ 2 } \) cups of flour and 1\(\frac { 2 }{ 3 } \)cups of sugar. Estimated total quantity of both ingredients used in 10 such packets of biscuits will be
less than 30 cups
between 30 cups and 40 cups
between 40 cups and 50 cups
above 50 cups
10.
The product of 0.03 \(\times \)0.9 is
2.7
0.27
0.027
0.0027
11.
Each side of a regular hexagon is 3.5 cm long. The perimeter of the given polygon is
17.5 cm
21 cm
18.3 cm
20 cm
12.
Which of the following is the equivalent fraction of \(\frac { 3 }{ 4 } \)with numerator 18?
\(\frac { 18 }{ 12 } \)
\(\frac { 18 }{ 20 } \)
\(\frac { 18 }{ 4 } \)
\(\frac { 18 }{ 24 } \)
13.
What is the\(\frac { 1 }{ 2 } \)of 12?
5
6
3
0
14.
Which of the following represents \(\frac{1}{3}\)of\(\frac{1}{6}\)?
\(\frac{1}{3}+\frac{1}{6}\)
\(\frac{1}{3}-\frac{1}{6}\)
\(\frac{1}{3}\times \frac{1}{6}\)
\(\frac{1}{3}\div \frac{1}{6}\)
15.
\(\frac{2}{5}\times 5\frac{1}{5}\) is equaI to
\(\frac{26}{25}\)
\(\frac{52}{25}\)
\(\frac{2}{5}\)
6
16.
\(\frac { 2 }{ 5 } \)of 25 is_______
17.
\(\frac { 2 }{ 3 } \) of 27 is_____
18.
2.4 \(\times\) 1000 =_____
19.
The lowest form of the product \(2\frac{3}{7}\times \frac{7}{9}\) is _________
20.
\(\frac{1}{2}\) of 4\(\frac{2}{7}\) is __________
21.
The reciprocal of an improper fraction
22.
\(81.81 \div 9.9\)
23.
\(2\frac{6}{13}+4\frac{6}{39}+\frac{1}{13}\)
24.
\(9.42 \times 5.45\)
25.
\(4 \frac{6}{9}\div \frac{1}{81}\)
26.
What is the reciprocal of 1\(\frac{2}{13}\)
27.
Write the place value of 2 in the following decimal number 20.56
28.
Evaluate 2\(\times\)5\(\times\)1.2
29.
What is the reciprocal of \(\frac { 5 }{ 17 } \) ?
30.
The product of two numbers is 2.0016. If one of them is 0.72, Find the other
1.
(a)
2.
(b)
3.
(b)
4.
(a)
5.
(a)
6.
73>10
7.
(c)
1000
8.
(d)
reciprocal of the other
9.
(c)
between 40 cups and 50 cups
10.
(c)
0.027
11.
(b)
21 cm
12.
(d)
\(\frac { 18 }{ 24 } \)
13.
(b)
6
14.
(c)
\(\frac{1}{3}\times \frac{1}{6}\)
15.
(b)
\(\frac{52}{25}\)
16.
( )
10
17.
( )
18
18.
( )
2400
19.
( )
\(1 \frac{8}{9}\)
20.
( )
\(2\frac{1}{7}\)
21.
( )
proper fraction
22.
( )
8.263
23.
( )
\(6 \frac{27}{39}\)
24.
( )
51.339
25.
( )
378
26.
( )
\(\frac{13}{15}\)
27.
( )
20.56 be (10) or tens
as 20.56 = 2\(\times\)10+5\(\times\)\(\frac { 1 }{ 10 } \)+6\(\times\)\(\frac { 1 }{ 100 } \)
28.
29.
( )
\(\frac { 17 }{ 5 } \)
30.
( )
Product of two numbers = 2.0016
One of the decimal numbers = 0.72
Other decimal number = 2.0016 7÷0.72
= \(\frac { 2.0016 }{ 0.72 } =\frac { 20016 }{ 7200 } \)
= 2.78
Thus the other number is 2.78
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