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7th Grade > Mathematics

FRACTIONS AND DECIMALS MCQs

Fractions, Decimals

Total Questions : 227 | Page 12 of 23 pages
Question 111. Find the unknown value.
4.73÷ ____ = 0.0473
  1.    1
  2.    10
  3.    100
  4.    1000
 Discuss Question
Answer: Option C. -> 100
:
C
The decimal point shifts two places to the left when we divide by 100.
= 4.73100 = 0.0473
Question 112. What should be multiplied with 15.73 to give 15730 as the product?
15.73×____ =15730
  1.    1
  2.    10
  3.    100
  4.    1000
 Discuss Question
Answer: Option D. -> 1000
:
D
To shift the decimal three decimal places to the right, we need to multiply with 1000.
∴ 15.73×1000 =15730
Question 113. Find the value.
0.73+ ___ = 1
  1.    0.37
  2.    0.27
  3.    0.17
  4.    0.3
 Discuss Question
Answer: Option B. -> 0.27
:
B
To find the unknown value, we have to subtract 0.73 from 1.
/10./09010−0.73–––––––––––0.27
The answer is 0.27.
Question 114. 710 as a decimal is ___.
  1.    0.007
  2.    0.07
  3.    0.7
  4.    7
 Discuss Question
Answer: Option C. -> 0.7
:
C
Conversion of fraction to decimal
⇒ 710=0.7
Therefore, we can write710 in decimal form as 0.7.
Question 115. Find the value.
8÷0.2= ___
  1.    40
  2.    4
  3.    0.4
  4.    0.04
 Discuss Question
Answer: Option A. -> 40
:
A
80.2×1010=802=40
Question 116. Find the value.
0.9×0.9 =____
  1.    81
  2.    8.1
  3.    0.81
  4.    0.081
 Discuss Question
Answer: Option C. -> 0.81
:
C
0.9×0.9=910×910
=> 0.9×0.9 = 81100
=>0.9×0.9 = 0.81
Question 117. If one pencil costs ₹ 5.75, then the cost of 100 such pencils is _____.
  1.    ₹ 0.575 
  2.    ₹ 57.50 
  3.    ₹ 575
  4.    ₹ 5750
 Discuss Question
Answer: Option C. -> ₹ 575
:
C
Given: Cost of 1 pencil = ₹ 5.75
∴ Cost of 100 pencils =₹(5.75×100)
⇒ Cost of 100 pencils = ₹575
Question 118. Find the value.
0.9×0.83×0.75×0 = ___
 Discuss Question

:
Any number multiplied by 0 gives 0 as a result.
So, 0.9×0.83×0.75×0=0
Question 119. Find the value.
1+11000=____ 
  1.    1.1
  2.    1.01
  3.    1.001
  4.    1.0001
 Discuss Question
Answer: Option C. -> 1.001
:
C
We know that
11000= 0.001
So, 1+0.001=1.001
Question 120. If 24×16=384 then , 2.4×16= _____
  1.    3840
  2.    38.4
  3.    3.84
  4.    0.384
 Discuss Question
Answer: Option B. -> 38.4
:
B
Given:
24×16=384
Since 24 got divided by 10 to give 2.4, similarly 384 will also be divided by 10 to yeild 38.4
∴2.4×16= 38.4

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