• This is an assessment test.
  • These tests focus on the basics of Maths and are meant to indicate your preparation level for the subject.
  • Kindly take the tests in this series with a pre-defined schedule.

Basic Maths: Test 57

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Question 1
$4+44+444+4.444=?$
A
4936
B
496.444
C
402
D
496
Question 1 Explanation:
$?=4+44+444+4.444=496.444$
Question 2
21% of 7140 + 46% of 351 = ?% of 9227
A
56
B
63
C
18
D
69
Question 2 Explanation:
image-32
Question 3
$11\frac{1}{2}+9\frac{5}{6}-5\frac{2}{3}-2\frac{7}{9}=?$
A
$12\frac{13}{14}$
B
$12\frac{8}{9}$
C
$12\frac{1}{14}$
D
$13\frac{1}{9}$
Question 3 Explanation:
\[\begin{align} & ?=11\frac{1}{2}+9\frac{5}{6}-5\frac{2}{3}-2\frac{7}{9} \\ & =\left( 11+9-5-2 \right)+\left( \frac{1}{2}+\frac{5}{6}-\frac{2}{3}-\frac{7}{9} \right) \\ & =13+\left( \frac{9+15-12-14}{18} \right) \\ & =13-\frac{2}{18}=13-\frac{1}{9}=12\frac{8}{9} \\ \end{align}\]
Question 4
$\left( 0.01\times 0.001\times 0.0001\times {{10}^{10}} \right)$ is equal to
A
100
B
$\frac{1}{10}$
C
$\frac{1}{100}$
D
10
Question 4 Explanation:
$\begin{align} & =0.01\times 0.001\times 0.0001\times {{10}^{10}} \\ & ={{10}^{-9}}\times {{10}^{10}}=10 \\ \end{align}$
Question 5
$\frac{2.55\times 2.40-2.40\times 2.35}{0.048}$ is equal to:
A
1
B
$\frac{1}{2}$
C
$\frac{1}{10}$
D
10
Question 5 Explanation:
$\begin{align} & =\frac{2.40\,\left( 2.55-2.35 \right)}{0.048} \\ & =\frac{2.40\times 0.20}{0.048}=10 \\ \end{align}$
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