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