Students can Download Class 8 Maths Chapter 7 Rational Numbers Ex 7.4 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 8 Maths helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.

## Karnataka State Syllabus Class 8 Maths Chapter 7 Rational Numbers Ex 7.4

1. Represent the following rational numbers on the number line.

Question i.

\(\frac{-8}{3}\)

Answer:

Question ii.

\(\frac{3}{8}\)

Answer:

Question iii.

\(\frac{2}{7}\)

Answer:

Question iv.

\(\frac{12}{5}=2 \frac{2}{5}\)

Answer:

Question v.

\(\frac{45}{13}=3 \frac{6}{13}\)

Answer:

Question 2.

Write the following rational numbers in ascending order.

\(\frac{3}{4}, \frac{7}{12}, \frac{15}{11}, \frac{22}{19}, \frac{101}{100}, \frac{-4}{5}, \frac{-102}{81}, \frac{-13}{7}\)

LCM of the denominators in 35550900

Answer:

Question 3.

Write 5 rational number between \(\frac{2}{5}\) and \(\frac{3}{5}\) having same denominator.

Answer:

Question 4.

How many positive rational numbers less than 1 are there such that the sum of the denominator and numerator does not exceed 10?

Answer:

\(\frac{1}{2}, \frac{1}{3}, \frac{1}{4}, \frac{1}{5}, \frac{1}{6}, \frac{1}{7}, \frac{1}{9}, \frac{1}{3}, \frac{2}{3}, \frac{2}{3}, \frac{2}{5}, \frac{2}{4}, \frac{3}{4}, \frac{3}{5}, \frac{3}{7}, \frac{4}{5}\) are lesser than 1.

There are 15 rational numbers.

Question 5.

Suppose \(\frac{m}{n}\) and \(\frac{p}{q}\) are two positive numbers. Where does \(\frac{m+p}{n+q}\) lie, with respect to \(\frac{m}{n}\) and \(\frac{p}{q}\) .

Answer:

Question 6.

How many rational numbers are there strictly between 0 and 1 such that the denominator of the rational number is 80?

Answer:

Rational numbers with denominator 80 and numerator from 1 to 79 \(\left(\text { like } \frac{1}{80}, \frac{2}{80},-\dots-\frac{79}{80}\right)\)

There are 79 such rational numbers.

Question 7.

How many rational numbers are there strictly between O and 1 with the property that the sum of the numerator and denominator is 70?

Answer:

The numbers

satisfy the property that the sum of the numerator and denominator is 70 and lie between O and I. There are 34 such numbers