Question

Look at these interesting stamps.
(a) How many squares of one centimetre side does stamp A cover? ________
And stamp B? _________

(b) Which stamp has the biggest area?
How many squares of side 1 cm does this stamp cover?
How much is the area of the biggest stamp? _________ square cm.

(c) Which two stamps have the same area? __________
How much is the area of each of these stamps? __________ square cm.

(d) The area of the smallest stamp is __________ square cm.
The difference between the area of the smallest and the biggest stamp is _________ square cm.

Answer 1

(a)
Stamp A covers 18 squares, each of one centimetre side. Stamp B covers 8 squares each of 1 centimetre side.

(b)
Stamp A has the biggest area.
Stamp A covers 18 squares, each of one centimetre side.
Area of biggest stamp = 18 square cm

(c)
Stamp D and stamp F has same area.
Stamp D and stamp F covers equal number of squares. Each of them covers 12 squares of one centimetre side.
Area of each of these stamps = 12 square cm

(d)
Stamp E is the smallest stamp. It covers 4 squares, each of one centimetre side.
Area of smallest stamp = 4 square cm
Now, area of biggest stamp = 18 square cm
Difference between the area of smallest stamp and biggest stamp = (18 - 4) square cm
= 14 square cm