Question

(i) Abhay had ₹50. He bought fruits for ₹24.75. Find the amount left with Abhay?
(ii) What should be added to 20.75 to get 25.5?
(iii) What should be subtracted from 10.1 to get 4.575?

Answer 1

Hint: We start solving the problem (i) by using the fact that we need to subtract the amount spent from the total amount to get the amount left. We subtract the amount spent for fruits from the total amount and make calculations to get the required value. For the problem (ii), we assume the variable for the number we need to add and form an equation representing the problem. After forming an equation, we make necessary calculations to get the required value. For the problem (iii), we assume the variable for the number we need to subtract and form an equation representing the problem. After forming an equation, we make necessary calculations to get the required value.

Complete step by step answer:
(i) According to the problem, it is given that Abhay had ₹50 and bought fruits for ₹24.75. We need to find the amount left with Abhay.
We know that we need to subtract the amount spent for fruits from the total amount in order to find the amount left with Abhay.
So, we get the amount left with Abhay as ₹$\left( 50.00-24.75 \right)$ = ₹$\left( 25.25 \right)$.
∴ The amount left with Abhay is ₹25.25.

(ii) According to the problem, we need to find the number that should be added to $20.75$ in order to get $25.5$. Let us the number that needs to be added is ‘x’.
So, we have $20.75+x=25.5$.
$\Rightarrow x=25.5-20.75$.
$\Rightarrow x=4.75$.
So, we need to add $4.75$ to $20.75$ in order to get $25.5$.
∴ The number that should be added to $20.75$ in order to get $25.5$ is $4.75$.

(iii) According to the problem, we need to find the number that should be subtracted from $10.1$ in order to get $4.575$. Let us the number that needs to be subtracted is ‘y’.
So, we have $10.1-y=4.575$.
$\Rightarrow y=10.1-4.575$.
$\Rightarrow y=5.525$.
So, we need to subtract $5.525$ from $10.1$ in order to get $4.575$.
The number that should be subtracted from $10.1$ in order to get $4.575$ is $5.525$.

Note:
For problem (ii) and (iii), we can directly make the subtraction and addition operations to get the required. But it may give us confusion that leads to wrong answers. So, most of the time it is preferable to write an equation and solve for those equations. We should not make mistakes while subtracting in decimal places.