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CBSE Questions for Class 7 Maths Fractions And Decimals Quiz 1 - MCQExams.com
CBSE
Class 7 Maths
Fractions And Decimals
Quiz 1
$$5.6 \times 4.5 + 3.4= ?$$
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123.42
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2613.76
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243.12
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28.6
Explanation
$$5.6\times4.5=25.2$$
so,
$$5.6\times4.5 +3.4=25.2+3.4=28.6$$
Solve the given
$$3.005+4.7$$
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$$3.052$$
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$$3.475$$
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$$7.705$$
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$$3.007$$
Explanation
Addition of $$3.005$$ and $$4.7$$ gives $$3.005+4.7=7.705$$
$$ \displaystyle \frac{1}{7} $$ of $$49$$ litre $$=$$ ____litre
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$$1$$
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$$5$$
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$$7$$
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$$6$$
Explanation
$$\dfrac{1}{7}$$ of $$49$$ litre $$=\dfrac{1}{7}\times 49=7$$ litre.
Hence, the answer is $$7$$.
Any mixed fraction can be divided into two parts and they are:
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Whole number and proper fraction
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Whole number and improper fraction
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Proper fraction and improper fraction
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None of the above
Explanation
A Mixed Fraction is a whole number and a proper fraction combined.
for example $$ 4 \dfrac{2}{3}$$, where $$4 $$ is the whole number part and
$$ \dfrac{2}{3}$$ is the
proper fraction.
Subtract the given decimals:
$$4.17$$ from
$$5.5$$
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$$1.33$$
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$$3.62$$
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$$1.12$$
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$$3.15$$
Explanation
$$5.5-4.17=1.33$$
Simplified value for $$12.500 + 8.75 + 2.25$$ is
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$$23.500$$
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$$13.600$$
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$$13600$$
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$$23.050$$
Explanation
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
Evaluate the expression $$\displaystyle 1.5625+0.75-0.3125$$
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$$5.9375$$
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$$4.2968$$
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$$2.1250$$
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$$2$$
Explanation
$$1.5625 + 0.75 - 0.3125$$
$$= 2.3125 - 0.3125 = 2$$
Mixed fraction for $$\displaystyle \frac {39}{12}$$ is
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$$3\displaystyle \frac {1}{12}$$
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$$3\displaystyle \frac {2}{12}$$
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$$3\displaystyle \frac {3}{12}$$
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$$2\displaystyle \frac {14}{12}$$
Explanation
$$Q\displaystyle \frac {R}{D}$$ = $$3\displaystyle \frac {3}{12}$$
Find the sum of $$1.2$$ and $$2.3$$.
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$$35$$
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$$3.5$$
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$$0.35$$
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$$1.23$$
Explanation
The sum of $$1.2$$ and $$2.3$$ will be $$1.2+2.3=3.5$$
The number equal to 22 thousandths is
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0.22
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0.022
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2.022
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2.202
Explanation
$$\frac{22}{1000} = 0.022$$
Solve:
$$\displaystyle 122.5 \div 1000 = $$
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$$.01225$$
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$$.1225$$
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$$1.225$$
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$$12.25$$
Explanation
$$122.5/1000$$
$$=1225/10000$$
$$=0.1225$$
Hence Option B
Solve:
$$\displaystyle 14.79\times 1000 $$ is
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$$14709$$
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$$14790$$
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$$1479$$
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$$147.9$$
Explanation
$$14.79\times 1000 = 14790$$
Hence Option B
Mixed fraction for $${\dfrac{39}{12}}$$ is
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$${3\dfrac {1}{12}}$$
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$${3\dfrac {2}{12}}$$
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$${3\dfrac {3}{12}}$$
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$${2\dfrac {14}{12}}$$
Explanation
$$\dfrac{39}{12}$$ can be written as $$\dfrac{12\times{3}+3}{12}$$
So mixed fraction of this number will be $$3\dfrac{3}{12}$$
So the correct answer is Option C
Improper fraction of $$\displaystyle 12 \frac{1}{6}$$ is
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$$\displaystyle \frac{72}{6}$$
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$$\displaystyle \frac{73}{6}$$
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$$\displaystyle \frac{108}{6}$$
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$$\displaystyle \frac{85}{6}$$
Explanation
$$\displaystyle \frac{WN \times D + N}{D}$$
$$\displaystyle \frac{12 \times 6 + 1}{6} = \frac{72+1}{6} = \frac{73}{6}$$
Multiply:
$$123\times24.53$$
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$$3017.19$$
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$$30171.9$$
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$$307.719$$
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$$30.719$$
Explanation
Multiplying and dividing by $$100$$ we get
$$123\times 24.53 = (123\times2453)\div100$$
$$=3017.19$$
Simplified value for $$(17.5+2.5)\div 5$$ is ____ .
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$$1$$
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$$2$$
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$$3$$
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$$4$$
Explanation
To simplify: $$\left( 17.5+2.5 \right) \div 5$$
Now,
$$\left( 17.5+2.5 \right) \div 5$$
$$=\left( 20.0 \right) \div 5$$
$$ =20\div 5$$
$$ =4$$
Hence, $$Op-D$$ is correct .
Find the value of $$617+6.017+0.617+6.0017$$.
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$$6.2963$$
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$$62.965$$
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$$629.6357$$
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$$62.8975$$
Explanation
given that, $$617.0000+6.0170+0.6170+6.0017=629.6357$$
hence option $$C$$ is correct
Which of the following is not a proper fraction ?
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$$\dfrac{2}{3}$$
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$$\dfrac{3}{4}$$
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$$\dfrac{5}{7}$$
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$$\dfrac{6}{5}$$
Explanation
In $$\dfrac{6}{5}$$, the numerator $$6$$ is greater than the denominator $$5$$.
Therefore, $$\dfrac{6}{5}$$ is not a proper fraction.
Evaluate : $$88.8 + 8.08 + 0.08 + 88.08 + 0.80 + 888$$.
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$$1073.84$$
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$$1073.76$$
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$$1073.04$$
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None of these
Explanation
$$88.80$$
+ $$8.08$$
+ $$0.08$$
+ $$88.08$$
+ $$0.80$$
+ $$888.00$$
_________
$$1073.84$$
_________
$$\therefore$$ Required sum $$= 1073.84$$.
$$685.59 - x = 607.88 - 351.46$$
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$$449.28$$
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$$419.17$$
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$$429.17$$
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$$439.28$$
Explanation
Given that : $$685.59 - x = 607.88 - 351.46$$
Therefore, $$x = 685.59 - 607.88 + 351.46 = 429.17$$
Which of the following is not an improper fraction?
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$$\dfrac{4}{3}$$
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$$\dfrac{3}{2}$$
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$$\dfrac{5}{3}$$
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$$\dfrac{7}{11}$$
Explanation
In improper fractions, the numerator is always greater than the denominator.
In $$\dfrac{7}{11}$$, the numerator $$7$$ is smaller than the denominator $$11$$.
In all other options $$\dfrac{4}{3},\dfrac{3}{2}, \dfrac{5}{3}$$, the numerator is greater than the denominator.
Therefore, $$\dfrac{7}{11}$$ is not an improper fraction.
Example for an improper fraction is
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$$\displaystyle \frac{25}{26}$$
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$$\displaystyle \frac{12}{13}$$
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$$\displaystyle \frac{15}{14}$$
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$$\displaystyle \frac{19}{20}$$
Explanation
Denominator is less than the
numerator.
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 ?
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I, III, II
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II, I, III
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II, III, I
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III, I, II
Explanation
(I) $$\displaystyle\frac{368.39}{17} = 21.67$$
(II) $$\displaystyle\frac{170.50}{62} = 2.75$$
(III) $$\displaystyle\frac{875.65}{83} = 10.55$$
$$\therefore$$ The correct sequence in decreasing order is (I), (III), (II).
Evaluate : $$0.75 - 0.0075$$.
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$$0.7405$$
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$$0.7425$$
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$$0.7415$$
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$$0.7525$$
Explanation
$$0.7500$$
$$- 0.0075$$
_________
$$0.7425$$
_________
$$\therefore$$ Required difference $$= 0.7425$$.
Evaluate the missing term:
$$301.01 - 0.101 =$$ ___ $$+ 198.01$$
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$$103.119$$
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$$103.101$$
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$$102.901$$
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$$102.899$$
Explanation
Requried number $$ = 301.01 - 0.101 - 198.01$$
$$= 301.01 - 198.111 = 102.899$$
Improper fraction of $$12\frac {1}{6}$$ is
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$$\frac {72}{6}$$
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$$\frac {73}{6}$$
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$$\frac {108}{6}$$
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$$\frac {85}{6}$$
Explanation
$$\frac {WN\times D+N}{D}$$
$$\frac {12\times 6+1}{6}=\frac {72+1}{6}=\frac {73}{6}$$
The above image represents the fraction:
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$$\dfrac {3}{2}$$
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$$2\dfrac {1}{3}$$
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$$2\dfrac {1}{2}$$
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$$3\dfrac {1}{2}$$
Explanation
In the given image, clearly there are 2 full shaded parts and one half shaded part.
Therefore, figure represent $$2+\displaystyle \frac12$$
$$\Rightarrow 2\displaystyle \frac12$$
Hence, option C is correct.
The above figure represents which of the following fractions?
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$$\dfrac {9}{7}$$
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$$2\dfrac {1}{2}$$
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$$4\dfrac {1}{2}$$
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$$2\dfrac {1}{4}$$
Explanation
Clearly, four circles are completely shaded and in the fifth one, half is shaded of the whole.
$$\therefore $$ we represent this $$4+\dfrac 12 = 4\dfrac 12$$
Hence, the answer is $$4\dfrac{1}{2}$$.
Mixed fraction of $$\dfrac {39}{12}$$ is
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$$3\dfrac {1}{12}$$
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$$3\dfrac {2}{12}$$
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$$3\dfrac {3}{12}$$
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$$2\dfrac {14}{12}$$
Explanation
A Mixed Fraction is a whole number and a proper fraction combined.
Divide the numerator by the denominator.
Write down the whole number answer
Then write down any remainder above the denominator.
$$\dfrac{39}{12}=\dfrac{36}{12}+\dfrac{3}{12}=3+\dfrac{3}{12}=3\dfrac{3}{12}$$
represents
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$$\displaystyle \frac{3}{2}$$
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$$\displaystyle 2\frac{1}{3}$$
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$$\displaystyle 2\frac{1}{2}$$
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$$\displaystyle 3\frac{1}{2}$$
Explanation
Since 2 wholes and half of third rectangle is shaded, the given figure represents $$ 2 \frac {1}{2} $$
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