Expressions using Letter Numbers Class 7 Very Short Question Answer

Expressions using Letter Numbers Class 7 Very Short Question Answer

Expressions using Letter-Numbers Class 7 Very Short Question Answer

Question 1.

Find the area of a square of side m cm.

Solution:

Area = m × m square cm.

Question 2.

A class with p students has planned a picnic. An amount of ₹ 50 is collected from each student. Out of which ₹ 1800 is paid in advance for transport. How much money is left with them to spend on other items ?

Solution:

5p - 1800 (in ₹)

Question 3.

In a village, there are 8 water tanks to collect rain water. On a particular day, x litres of rain water is collected per tank. If 100 litres of water was already there in one of the tanks, then what is the total amount of water (in L) in the tanks on that day?

Solution:

8x + 100

Question 4.

Weight of a person was 55 kg. His weight increases by p kg in a year. Write expression for his present weight (in kg).

Solution:

Weight = 55 + p.

Question 5.

Find the value of 2x + y + 24 at x = - 3 and y = 2.

Solution:

2x + y + 24 = 2 × (-3) + 2 + 24

= -6 + 2 + 24 = 20.