Answer the Following on Rational Numbers

Solving the Problem in Exercise 1.1 (1)

 Perform the Computation on Rational Numbers
(Using Properties of Rational Numbers)

Exercise 1.1 (i)

Solution to Exercise 1.1 - (i)

Exercise 1.1 (ii)

Solution to Exercise 1.1 - (ii)

Exampler Problems on Rational Numbers - Part 1

Commutative Property of Rational Numbers

Commutative Property of Rational Numbers over Addition, Subtraction, Multiplication and Multiolication

Closure Property of Rational Numbers

Closure Properties on Rational Numbers

Rational Numbers are Closed Under Subtraction!

Closure Property of Rational Numbers during Multiplication & Division

More Problems on Properties of Triangles

Solve the Problems using the Properties of Triangles

Solution for Question 5 (a) & (b):

Questions 7 to 12:

Solving More
Problems on Simple Equation

1.  Pranay’s father is seven times his age now. Two years later his father will be five times as old as his son will be. Find their present ages.  

2.  A number consists of two digits in which the tens digit exceeds the units digit by 6. The number itself is equal to ten times the sum of digits. Find the number. 

3.  The present ages of A and B are in the ratio 7:5. Ten years later, their ages will be in the ratio 9:7. Find their present ages.