Unit 1 Rational Number Exercise 1 Class 7th Math kptbb and PTB| New course 2022,2023
In this Vedio I have Solved Exercise 1.1 Rational Number Unit 1 Class 7th Mathematics New Course 2022 and 2023 Single National Curriculum kpk and Punjab Textbook.
1.1 Rational Numbers
When we divide an integer by another integer, the answer may
or may not be an integer. For example, if we divide -5 by 2, we
get. This number is not an integer. So, to fulfil the demand of such problems, another set
of numbers was introduced which is called the set of rational numbers.
A rational number is a number (positive or negative) that can be represented as a fraction
or quotient of two integers. In general we express rational numbers in the form of where
p and q are integers and qz0.
3,-0.75, 0.2 and 0.1111... are all rational numbers.
The set of rational numbers is denoted by the letter Q
We can show the relation of
rational numbers with other
sets by using a Venn diagram.
NcWcZcQ
All integers are rational
numbers, as they can be
written in from of fraction eg
2 can be written as
Numbers
Note it down
A rational number and
q0 are equal.
·
where
Set of rational number is a superset of
set of integers.
1.1.1 Place value
We can show rational number as whole number and decimal number in the place value table.
Hamid bought a house in Rs 429716853. Show this value in place value chart.
Standard Form:
429,716,853
Place Value Form:
Each digit has its value depending upon its position.
Note it down
Place value tells us the position of
digits in a number.
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