Test Details

Rational Numbers

Jan 23, 8:13 PM

120 minutes

Jan 23, 10:13 PM

40.0 marks

MCQ

24 questions

Akshay Kumar

Hard-working and passionate.Science and Social science Teacher.Focused on creating positive environments in which adolescents Incorporate interdisciplinary knowledge into classroom to engage students of all learning orientations.

Class Details

Maths

Science

Physics

Social Science

Chemistry

Class 8

Maths

Science

Physics

Social Science

Chemistry

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Question Text

Question 1 :
The rational number between the pair of number $\dfrac{1}{2}$ and $\sqrt 1$ is:

Question 2 :
Name the property of rational numbers illustrated by the given statement. $\displaystyle\frac{7}{4}\times \left(\displaystyle\frac{-8}{3}+\frac{-13}{12}\right)=\frac{7}{4}\times \frac{-8}{3}+\frac{7}{4}\times \frac{-13}{12}$.

Question 5 :
State TRUE or FALSEThe three rational number between $\dfrac{1}{3}$ and $\dfrac{1}{2}$ are $\displaystyle\frac{9}{24},\frac{10}{24},\frac{11}{24}$.

Question 8 :
The rational number lying exactly in between the numbers $\displaystyle \frac { 1 }{ 5 } $ and $\displaystyle \frac { 1 }{ 3 } $ is

Question 10 :
State true or false: Ten rational numbers between $\dfrac{3}{5}$ and $\dfrac {3}{4}$ are  $\displaystyle\frac{97}{160},\frac{98}{160},\frac{99}{160},\frac{100}{160},\frac{101}{160},\frac{102}{160},\frac{103}{160},\frac{104}{160},\frac{105}{160},\frac{106}{160}$

Question 13 :
If $x$ be any integer different from zero and $m$ be any integers then $x^{-m}$ is equal to

Question 14 :
The value of $\dfrac {3}{5} \times \dfrac {35}{24} + \dfrac {10}{1}\times \dfrac {3}{5} $ is

Question 15 :
An illustration of the associative law for multiplication is given by

Question 18 :
Find the value of $x$ in $\dfrac {4}{3} \times \left [x + \dfrac {1}{13} \right ] = \dfrac {4}{3}\times \dfrac {8}{11} + \dfrac {4}{3}\times \dfrac {1}{13}.$

Question 19 :
Closure property is satisfied in whole numbers w.r.t. to ......... and ......... .

Question 20 :
Write the multiplicative inverse of each of the following rational numbers: $7$; $-11$; $\displaystyle\frac{2}{5}$; $\displaystyle\frac{-7}{15}$

Question 21 :
Simplify using associative property : $\dfrac {7}{16} \times \left (\dfrac {-24}{49} \times \dfrac {28}{15}\right )$

Question 22 :
Choose the rational number which does not lie between rational numbers $ \displaystyle \frac{3}{5} $ and $ \displaystyle \frac{2}{3} $ :

Question 23 :
A computer is programmed to add $3$ to the number $N$, multiply the result by $3$, subtract $3$, and divide this result by $3$. The computer answer will be

Question 24 :
For any two real number, an operation defined by $a* b= 1 +ab$ is.

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