Fractions and Decimals Test

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Fractions and Decimals Test - 19

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Weekly Quiz Competition

Question 1
1 / -0

The value of $$\cfrac {3}{4}\times \cfrac {4}{3}\times \cfrac {2}{5}= ......$$

A
$$\cfrac {2}{5}$$

B
$$0$$

C
$$1$$

D
none

Solution

$$\cfrac {3}{4}\times \cfrac {4}{3}\times \cfrac {2}{5}=\dfrac{2}{5}$$
So, correct answer is option A.
Question 2
1 / -0

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

Solution

Expanded form of 92083.1
$$90000+2000+80+3+0.1$$
Question 3
1 / -0

In improper fraction, the numerator is always _____ the denominator.

A
less than

B
greater than

C
equal to

D
none

Solution

In an improper fraction, the numerator is always greater than the denominator.
Eg $$\displaystyle \frac{9}{5}$$,$$\displaystyle \frac{5}{3}$$
Question 4
1 / -0

What is the value of $$7.854 \times 10$$ ?

A
$$785.4$$

B
$$78.54$$

C
$$7854$$

D
$$78540$$

Solution

$$7854$$
$$\times 10$$
$$\overline{78540}$$
Now , we have decimal point upto 3 places so shifting point to 3 from backwards
Hence, $$7.854 \times 10 = 78.540=78.54$$
Question 5
1 / -0

Improper fraction of $$12\displaystyle \frac {1}{6}$$ is

A
$$\displaystyle \frac {72}{6}$$

B
$$\displaystyle \frac {73}{6}$$

C
$$\displaystyle \frac {108}{6}$$

D
$$\displaystyle \frac {85}{6}$$

Solution

A mixed fraction is usually in the form $$Whole\,number \dfrac{Numerator}{Denominator}$$.

It can be written as improper fraction using $$\displaystyle \frac {(Whole\,number\, \times\, Denominator)\, +\, Numerator}{Denominator}$$

$$\Rightarrow 12\dfrac{1}{6} = \displaystyle \frac {12\,\times\, 6\, +\, 1}{6}$$

$$\Rightarrow\, \displaystyle \frac {72\, +\, 1}{6}\, =\, \displaystyle \frac {73}{6}$$
Question 6
1 / -0

$$58.326 \times 463.9 \times 0.0081$$ is same as

A
$$5.8326 \times 4.639 \times 8.1$$

B
$$5.8326 \times 4.639 \times 0.81$$

C
$$58326 \times 4639 \times 0.0000081$$

D
None of these

Solution

In option A,
$$58.326\div10 = 5.8326$$
$$463.9\div100 = 4.639$$
$$0.0081\times1000 = 8.1$$

Multiplication by $$1000$$ and Division by $$10\times100 = 1000$$ gives the same result.

Answer : $$5.8326 \times 4.639 \times 8.1$$
Question 7
1 / -0

$$\cfrac {4}{7}\times \cfrac {7}{4}\times 0=.......$$

A
$$28$$

B
$$1$$

C
$$0$$

D
none

Solution

Any number multiplied with $$0$$ gives $$0$$.
So, $$\cfrac {4}{7}\times \cfrac {7}{4}\times 0=0$$
Hence, correct answer is option C.
Question 8
1 / -0

Simplified value for $$(17.5+2.5)\div 5$$ is ____ .

A
$$1$$

B
$$2$$

C
$$3$$

D
$$4$$

Solution

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 .
Question 9
1 / -0

Evaluate the expression $$\displaystyle 1.5625+0.75-0.3125$$

A
$$5.9375$$

B
$$4.2968$$

C
$$2.1250$$

D
$$2$$

Solution

$$1.5625 + 0.75 - 0.3125$$
$$= 2.3125 - 0.3125 = 2$$
Question 10
1 / -0

Simplified value for $$12.500 + 8.75 + 2.25$$ is

A
$$23.500$$

B
$$13.600$$

C
$$13600$$

D
$$23.050$$

Solution

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

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Re-Attempt Weekly Quiz Competition

Fractions and Decimals Test - 19

Result

Fractions and Decimals Test - 19

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SHARING IS CARING

Question 1

$$\cfrac {2}{5}$$

$$0$$

$$1$$

none

Solution

Question 2

9000 + 20000 + 80 + 1

9200 + 80 + 31

90000 + 2000 + 800 + 30 + 1

90000 + 2000 + 80 + 3 + 0.1

Solution

Question 3

less than

greater than

equal to

none

Solution

Question 4

$$785.4$$

$$78.54$$

$$7854$$

$$78540$$

Solution

Question 5

$$\displaystyle \frac {72}{6}$$

$$\displaystyle \frac {73}{6}$$

$$\displaystyle \frac {108}{6}$$

$$\displaystyle \frac {85}{6}$$

Solution

Question 6

$$5.8326 \times 4.639 \times 8.1$$

$$5.8326 \times 4.639 \times 0.81$$

$$58326 \times 4639 \times 0.0000081$$

None of these

Solution

Question 7

$$28$$

$$1$$

$$0$$

none

Solution

Question 8

$$1$$

$$2$$

$$3$$

$$4$$

Solution

Question 9

$$5.9375$$

$$4.2968$$

$$2.1250$$

$$2$$

Solution

Question 10

$$23.500$$

$$13.600$$

$$13600$$

$$23.050$$

Solution

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