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True False[1 Marks ]

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15 questions · timed · auto-graded

Question 21 Mark
$\frac{-3}{5}$ lies to the left of 0 on the number line.
Answer
True.
Solution:
All negative numbers lie on the left of 0.
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Question 41 Mark
$\frac{1}{3}\text{ and }\frac{-5}{2}$ lie on opposite sides of 0 on the number line.
Answer
True.
Solution:
All positive numbers lie on the right of 0 and all negative numbers on the left of 0.
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Question 81 Mark
$\frac{-3}{5}$ is the largest among $\frac{-3}{5},\frac{-7}{10}$
Answer
True.

Solution:

LCM of 5, 10 and 6 is 30

$\therefore\frac{-3\times6}{5\times6}=\frac{-18}{30}$

$\frac{-7\times3}{10\times3}=\frac{-21}{30}$

and $\frac{-5\times5}{-6\times5}=\frac{-25}{30}$

$\therefore\frac{-3}{5}$ is the largest among the given fractions.

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Question 91 Mark
$\frac{-15}{-11}$ lies to the left of 0 on the number line.
Answer
False.

Solution:

This is because $\frac{-15}{-11}=\frac{15}{11}$ which lies to the right of 0.

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Question 121 Mark
The quotient of two integers is always a rational number.
Answer
False.
Solution:
As zero is a rational number but division of zero is meaningless.
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Question 131 Mark
Every rational number is a fraction.
Answer
False.
Solution:
Every rational is not a fraction In fraction, numerator and denominators is a whole number but denominator can’t be zero.
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True False[1 Marks ] - MATHS STD 7 Questions - Vidyadip