Fractions And Decimals(7th Grade > Mathematics ) Questions and answers for exam Preparation

7th Grade > Mathematics

FRACTIONS AND DECIMALS MCQs

Fractions, Decimals

Total Questions : 227 | Page 15 of 23 pages

Question 141. What is the fraction of students who failed in Maths exam if the total number of students who appeared in the exam was 65 and the number of students who passed is 57?

6557
857
5765
865

Discuss Question

Answer: Option D. -> 865
:
D
No. of students failed = 65 - 57 = 8
Fraction of students who failed =

\frac{8}{65}

Question 142. If 5 of your friends ate one slice each from a medium pizza containing 6 equal slices, what will be the fraction of the pizza left over?

(56)th
(36)th
(16)th
(46)th

Discuss Question

Answer: Option C. -> (16)th
:
C
Total number of slices = 6
Number of slices ate by friends = 5
So, the fraction of pizza ate by friends =

\frac{5}{6}

We know that,
Fraction of pizza ate byfriends + Fraction of left over pizza = 1

∴

Fraction of left over pizza
= 1 - Fraction of pizza ate by friends

= 1 - \frac{5}{6}

= \frac{6}{6} - \frac{5}{6}

= \frac{6 - 5}{6}

= \frac{1}{6}

Question 143. Subtract

\frac{5}{7}

from

\frac{13}{7}

Discuss Question

Answer: Option C. -> 87
:
C
The fractions having same denominators are called like fractions.
Numerators are subtracted directly keeping the denominator common for like fractions.
So,

\frac{13}{7} - \frac{5}{7} = \frac{13 - 5}{7} = \frac{8}{7}

Question 144.

5 \frac{5}{3} + 7 \frac{5}{2}

= ____

1567
1616
1476
1716

Discuss Question

Answer: Option B. -> 1616
:
B

5 \frac{5}{3} = \frac{5 \times 3 + 5}{3} = \frac{20}{3}

and

7 \frac{5}{2} = \frac{7 \times 2 + 5}{2} = \frac{19}{2}

Thus,

5 \frac{5}{3} + 7 \frac{5}{2} = (\frac{20}{3} + \frac{19}{2})

= \frac{20 \times 2}{3 \times 2} + \frac{19 \times 3}{2 \times 3}

= \frac{40 + 57}{6}

= \frac{97}{6}

= 16 \frac{1}{6}

Question 145. If

\frac{999}{13}

is represented in form of

a \frac{b}{13}

, then the values of a and b are:

a=91 and b=11
a=76 and b=11
a=72 and b=13
a=76 and b=13

Discuss Question

Answer: Option B. -> a=76 and b=11
:
B
We have

\frac{999}{13} = 76 \frac{11}{13}

∴ a = 76

and

b = 11

Question 146. Convert 1.25 into a fraction in its simplest form.

Discuss Question

Answer: Option C. -> 54
:
C

1.25 = \frac{125}{100}

= \frac{5 \times 25}{4 \times 25}

= \frac{5}{4}

∴ 1.25 = \frac{5}{4}

Question 147. Find the digit in the hundredths place in the number 562.3254.

Discuss Question

Answer: Option D. -> 2
:
D
The place value chart for the decimal number 562.3254 is as below:
Hundreds 5
Tens 6
Ones 2
Tenths 3
Hundredths 2
Thousandths 5
Ten-thousandths 4
So, the digit in the hndredths place in the number 562.3254 is 2.

Question 148. In a marathon of 5.75 km, first break was taken after running 2.8 km and second break after another 1.3 km . Find the distance left to finish the marathon.

1.65 km
1.75 km
1.85 km
1.95 km

Discuss Question

Answer: Option A. -> 1.65 km
:
A
Total distance covered before second halt = (2.8 + 1.3) km = 4.1 km
Therefore, distance left = (5.75 - 4.10) km = 1.65 km

Question 149.