Class 7 Maths Chapter 2 Practice Question Answers - Fractions And Decimals

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Q1. Which of the following is not a proper fraction ?
(a) 2/3
(b) 3/4
(c) 5/7
(d) 6/5
Ans: (d)
Sol: In 6/5 , the numerator 6 is greater than the denominator 5.
Therefore,  6/5  is not a proper fraction.

Q2. Evaluate : 88.8+8.08+0.08+88.08+0.80+888.
(a) 1073.84
(b) 1073.76
(c) 1073.04
(d) None of these
Ans: (a)
Sol:

∴ Required sum =1073.84.

Q3. 685.59−x = 607.88−351.46
(a) 449.28
(b) 419.17
(c) 429.17
(d) 439.28
Ans: (c)
Sol: Given that : 685.59−x = 607.88 − 351.46
Therefore,  x = 685.59 − 607.88 + 351.46
= 429.17

Q4. Mixed fraction for 39/12 is
(a)  
(b)
(c)
(d)  
Ans: (c)
Sol: 39/12 can be written as 12 x3 +3 / 12
So mixed fraction of this number will be
So the correct answer is Option C. 

Q5. Consider the following quotients:
I.   368.39 divided by 17.
II.  170.50 divided by 62.
III. 875.65 divided by 83.
Their correct sequence in decreasing order is ?
(a) I, III, II
(b) II, I, III
(c) II, III, I
(d) III, I, II
Ans: (a)
Sol:

∴ The correct sequence in decreasing order is (I), (III), (II).

Q6. Evaluate : 0.75−0.0075.
(a) 0.7405
(b) 0.7425
(c) 0.7415
(d) 0.7525
Ans: (b)
Sol:
0.7500
−0.0075
________
0.7425
________
∴  Required difference =0.7425.

Q7. Evaluate the missing term:301.01− 0.101 = ___ +198.01
(a) 103.119
(b) 103.101
(c) 102.901
(d) 102.899
Ans: (d)
Sol: Required number
= 301.01 − 0.101 − 198.01
= 301.01 − 198.111
=102.899

Q8. Mixed fraction for 40/12 is
(a)  
(b)  
(c)  
(d)  
Ans: (c)
Sol:

So correct answer will be option C.

Q9. Which one is the example of improper fraction from the given options ?
(a) 2/3
(b) 1/2
(c) 23/22
(d) 11/15
Ans: (c)
Sol: In an improper fraction, the numerator is greater than the denominator.  Of the given fractions, 23/22  has numerator greater than the denominator.
Hence, 23/22  is an improper fraction.

Q10. Example of proper fraction from the given options is _____

(a) 5/7
(b) 4/3
(c) 16/15
(d) 22/21
Ans: (a)
Sol: In a proper fraction, the numerator is smaller than the denominator.  Of the given fractions, 5/7 has numerator smaller than the denominator.
Hence,  5/7 is a proper fraction.

Q11. Example for a proper fraction is
(a) 28/13
(b) 11/23
(c) 16/9
(d) 14/3
Ans: (b)
Sol: A proper fraction is a fraction where the numerator (the top number) is less than the denominator (the bottom number).
In given options 11/23 is proper fraction.

Q12. Example for an improper fraction from the given options is
(a) 25/26
(b) 12/13
(c) 15/14
(d) 19/20
Ans: (c)
Sol: In an improper fraction, the numerator is greater than the denominator.  
Of the given fractions, 15/14 has numerator greater than the denominator.
Hence, 15/14 is a proper fraction.

Q13. Expanded form of 92083.1
(a) 9000 + 20000 + 80 + 1
(b) 9200 + 80 + 31
(c) 90000 + 2000 + 800 + 30 + 1
(d) 90000 + 2000 + 80 + 3 + 0.1
Ans: (d)
Sol: Expanded form of 92083.1
90000 + 2000 + 80 + 3 + 0.1

Q14. In improper fraction, the numerator is always _____ the denominator.
(a) less than
(b) greater than
(c) equal to
(d) none
Ans: (b)
Sol: In an improper fraction, the numerator is always greater than  the denominator. Eg. 9/5,5/3

Q15. What is the value of 7.854×10 ?
(a) 785.4
(b) 78.54
(c) 7854
(d) 78540
Ans: (b)
Sol:

Now , we have decimal point upto 3 places so shifting point to 3 from backwards
Hence, 7.854 × 10
= 78.540
= 78.54

Q16. 58.326 × 463.9 × 0.0081 is same as
(a) 5.8326×4.639×8.1
(b) 5.8326×4.639×0.81
(c) 58326×4639×0.0000081
(d) None of these
Ans: (a)
Sol: In option A,
58.326÷10=5.8326
463.9÷100=4.639
0.0081×1000=8.1
Multiplication by 1000 and Division by 10 × 100 = 1000 gives the same result.

Q17. Simplified value for (17.5 + 2.5) ÷ 5 is ____ .
(a) 1
(b) 2
(c) 3
(d) 4
Ans: (d)
Sol: To simplify: (17.5 + 2.5) ÷ 5
Now,
(17.5 + 2.5) ÷ 5
= (20.0)÷5
= 20÷5
= 4

Q18. Evaluate the expression 1.5625+0.75−0.3125
(a) 5.9375
(b) 4.2968
(c) 2.1250
(d) 2
Ans: (d)
Sol: 1.5625+0.75 − 0.3125
= 2.3125 − 0.3125
= 2

Q19. Simplified value for 12.500 + 8.75 + 2.25 is
(a) 23.500
(b) 13.600
(c) 13600
(d) 23.050
Ans: (a)
Sol: Given that we have to find the sum of three numbers
12.500, 8.75, 2.25
8.75 + 2.25=11.00
12.500 + 8.75 + 2.25
= 12.500 + 11.000
= 23.500
So Option A is correct

Q20. Which of the following is not a proper fraction ?
(a) 2/3
(b) 3/4
(c) 5/7
(d)  6/5
Ans: (d)
Sol: Proper fraction is a fraction that is less than one, with the numerator less than the denominator.

Q21.  Find ?
(a) 63
(b) 26
(c) 36
(d) 62
Ans: (c)
Sol: Since we are given a mixed fraction so the resulting fraction will be:

= 36/10

Q22. In an improper fraction, the numerator is always .......... the denominator.
(a) less than
(b) greater than
(c) equal to
(d) none
Ans: (d)
Sol: A improper fraction is a fraction in which the numerator is greater than or equal to the denominator,
E.g. 7/4;4/4
Option D is correct.

Q23. The number equal to 22 thousandths is
(a) 0.22
(b) 0.022
(c) 2.022
(d) 2.202
Ans: (b)
Sol: 22/1000 = 0.022

Q24. Sum of 0.4, 15.46 and 0.002 is -
(a) 158.62
(b) 1.5862
(c) 15.862
(d) None of these
Ans: (d)
Sol: The given numbers are 0.4,15.46 and 0.002
⇒  15.46 + 0.4 + 0.002 = 15.46 + (0.4+0.002)
= 15.46 + 0.402
= 15.862
∴  Sum of 0.4,15.46 and 0.002 is 15.862

Q25. 0.04 × 0.08 × 4 is equal to
(a) 0.012
(b) 0.128
(c) 0.00128
(d) 0.0128
Ans: (d)
Sol: Here, 0.04 has 2 places decimal and 0.08 also has 2 places. So the total decimal places are 4.
So, the product will also have 4 decimal places from the right.
0.04 × 0.08 × 4 = 0.0128
So option D is the correct answer.

Q26. Solve: 0.126 × 100 is
(a) 12.6
(b) 0.126
(c) 1.26
(d) 126
Ans: (a)
Sol: 0.126×100
=(126×100)/1000
=12.6
Hence Option (a) is correct.

Q27. Solve: 122.5 ÷ 1000=
(a) 01225
(b) .1225
(c) 1.225
(d) 12.25
Ans: (b)
Sol: 122.5/1000
= 1225/10000
= 0.1225

Q28. Solve:14.79 × 1000 is
(a) 14709
(b) 14790
(c) 1479
(d) 147.9
Ans: (b)
Sol: 14.79 × 1000
= 14790
Hence Option B is correct answer.

Q29. 143.6 ÷ 2000= _____
(a)  0.1718
(b) 7.18
(c) 0.718
(d) 0.0718
Ans: (d)
Sol: 143.6 ÷ 2000
= 71.8 ÷ 1000
= 0.0718

Q30. Sum of 1.8,16.3 and 72.985 is _____
(a) 91.85
(b) 9108.5
(c) 91.085
(d) 9.1085
Ans: (c)
Sol: 1.800 + 16.300 + 72.985
=91.085
So option C is the correct answer.