Question

Convert the following rupees into paise: Rs. 90.

Answer 1

Hint:
Here, we need to convert Rs. 90 into paise. We will use the concept of multiplication to convert Rs. 90 into paise. Multiplication is the repeated addition of equal groups.

Complete step by step solution:
We will use the concept of multiplication to convert Rs. 90 into paise.
We know that 1 rupees is equal to 100 paise.
This can be written as
Rs. 1 \[ = \] 100 paise
The total number of rupees to be converted is Rs. 90.
The required number of paise can be found by multiplying the number of paise in 1 rupees by the total number of rupees to be converted. This can be written as
Number of paise in Rs. 90 \[ = \] Number of paise in Re. 1 \[ \times \] Total number of rupees to be converted.
Therefore, we get
Number of paise in Rs. 90 \[ = \] 100 \[ \times \] 90
Simplifying the expression, we get
Number of paise in Rs. 90 \[ = \] 9000 paise

Therefore, we have converted Rs. 90 into 9000 paise.

Note:
We used the concept of multiplication to convert Rs. 90 into paise. Multiplication helps in adding multiple equal groups quickly. It is denoted by the symbol \[ \times \]. Brackets may also be used to denote multiplication.
For example: Suppose that the number 2 is added repeatedly 15 times, that is \[2 + 2 + \ldots \ldots + 2\] 15 times. This can be represented using multiplication as \[2 \times 15\].
We multiplied 90 by 100 in the solution. The product of a number by a power of 10 (10, 100, 1000, etc) can be calculated using a simple method. The number of zeros in 100 is 2. When a number is multiplied by 100, the result can be obtained by adding 2 zeros to the end of the number. For example: When 90 is multiplied by 100, the result is 9000, which is simply obtained by adding 2 zeros after 90.