Mental Math on Perimeter and Area

In mental math on perimeter and area we will solve different type of problems on perimeter of a triangle, perimeter of a square and a rectangle, area of a rectangle, area of a square and word problems on area.

1. Area of a square of side 1 cm 4 mm = __________ sq mm.

2. Area of a square of side 1 cm = __________

3. Area of a rectangle of dimensions 1 m and 4 m is __________ sq. m.

4. Area of a rectangle = __________ × __________

5. Area of square = __________

6. Find the area of the rectangle whose length and breadth are 10 cm and 5 cm respectively. _____

7. Find the area of a square whose perimeter is 8 cm. _____ 

8. If ℓ = 25 cm, b = 15 cm, perimeter = _____ cm


1. 196

2. 1 sq. cm

3. 4

4. Length × Breadth

5. side × side

6. 50 sq. cm

7. 4 sq. cm

8. 80 cm

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