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MATHS [1 Mark Question Answer]

Rational Numbers · ICSE STD 7 (ICSE - English Medium). 65 questions.

Questions · Page 2 of 2

[1 Mark Question Answer]

Question 511 Mark
Express the following rational number in the standard form. $\frac{4}{-9}$
Answer
We know that a rational number is said to be in standard form if its denominator is positive in the lowest term.
$\frac{4}{-9}=\frac{-4}{9}$
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Question 521 Mark
Express the following rational number in the standard form. $\frac{-7}{-20}$
Answer
$\frac{-7}{-20}=\frac{7}{20}$
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Question 531 Mark
Express the following rational number in the standard form. $\frac{5}{-12}$
Answer
$\frac{5}{-12}=\frac{-5}{12}$
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Question 541 Mark
Express the following rational number in the standard form. $\frac{-7}{-8}$
Answer
$\frac{-7}{-8}=\frac{7}{8}$
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Question 551 Mark
Express $\frac{4}{7}$ as a rational number with numerator: 20
Answer
$\frac{4}{7}=\frac{4 \times 5}{7 \times 5}=\frac{20}{35}$
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Question 561 Mark
Express $\frac{4}{7}$ as a rational number with numerator: -20
Answer
$\frac{4}{7}=\frac{4 \times-5}{7 \times-5}=\frac{-20}{-35}$
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Question 571 Mark
Express $\frac{4}{7}$ as a rational number with numerator: -16
Answer
$\frac{4}{7}=\frac{4 \times-4}{7 \times-4}=\frac{-16}{-28}$
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Question 581 Mark
Express $\frac{4}{7}$ as a rational number with numerator: -12
Answer
$\frac{4}{7}=\frac{4 \times-3}{7 \times-3}=\frac{-12}{-21}$
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Question 591 Mark
Express $\frac{4}{7}$ as a rational number with numerator: 12
Answer
$\frac{4}{7}=\frac{4 \times 3}{7 \times 3}=\frac{12}{21}$
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Question 601 Mark
Express $\frac{3}{5}$ as a rational number with denominator: -35
Answer
$\frac{3}{5}=\frac{3 \times-7}{5 \times-7}=\frac{-21}{-35}$
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Question 611 Mark
Express $\frac{3}{5}$ as a rational number with denominator: 25
Answer
$\frac{3}{5}=\frac{3 \times 5}{5 \times 5}=\frac{15}{25}$
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Question 621 Mark
Express $\frac{3}{5}$ as a rational number with denominator: 45
Answer
$\frac{3}{5}=\frac{3 \times 9}{5 \times 9}=\frac{27}{45}$
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Question 631 Mark
Express $\frac{3}{5}$ as a rational number with denominator: -20
Answer
$\frac{3}{5}=\frac{3 \times-4}{5 \times-4}=\frac{-12}{-20}$
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Question 641 Mark
Express $\frac{3}{5}$ as a rational number with denominator: 20
Answer
$\frac{3}{5}=\frac{3 \times 4}{5 \times 4}=\frac{12}{20}$
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Question 651 Mark
Write down a rational number whose numerator is the largest number of two digits and denominator is the smallest number of four digits.
Answer
Largest two digit $=99$
Smallest, number of four digit $=1000$ Now numerator $=99$ and denominator $=1000$
$\therefore$ Rational number $=\frac{99}{1000}$
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[1 Mark Question Answer] - Page 2 - MATHS STD 7 Questions - Vidyadip