Arithmetic Expressions Class 7 Short Question Answer

Arithmetic Expressions Class 7 Short Question Answer

Arithmetic Expressions Class 7 Short Question Answer

Question 1.

Find the value of the expression 11 + 11 + 11 × 11.

Solution:

11 + 11 + 11 × 11 = 22 + 121 = 143.

Question 2.

Find the value of the expression 4x2 +77- 7x7.

Solution:

4 × 2 + 77 - 7 × 7 = 8 + 77 - 49 = 85 - 49 = 36.

Question 3.

A person bought 8 pencils at the rate of ₹ 6 per pencil and 4 pens at the rate of ₹ 12 per pen. Find the total amount spent by that person on the two items.

Solution:

Total amount spent = 8 × ₹ 6 + 4 × ₹12

= ₹ 48 + ₹ 48

= 2 × ₹ 48 = ₹ 96.

Question 4.

A farmer harvested 650 kg of wheat. He stored 250 kg of wheat in one warehouse and 125 kg of wheat in another warehouse. Find the remaining amount of wheat after writing it in the form of an expression.

Solution:

Expression for remaining wheat (in kg)

= 650 - 250 - 125 = 400 - 125 = 275

So, remaining wheat = 275 kg.

Question 5.

Rajul saves ₹ 620 every month. Write an expression for the money saved by her in a year and then find her saving of the year.

Solution:

Expression for saving = ₹ 620 × 12.

Total money saved = ₹ 7440.