2.5 cm / 100cm *2 cm = 5/100 cm = 0.05cm = 0.5mm

which is way too small to see on a map!

I think the answers that the first lot of people gave you are the correct ones. You may have misinterpreted the question.

so we can say that 2cm on a map is equal to 100cm in real life. Yoy should do a kind of proportion.So, we have

on the map in the real life

2cm 100cm

x 2.5cm

x = (2.5 * 2)/100

x = 5/100

x = 0.05cm

then we have to change it to (mm) or millimeter,

cm mm

1 10

0.05 x

I mean if 1cm equals with 10mm, then 0.05cm equls with how many millimeter:

x = (0.05 * 10)/1

x = 0.5mm

that is 2.5cm in the real life equals with 0.5mm on the map,

From there we can tell that 2.5cm (0.5 x 5) on the map represents 1.25m (0.25 x 5) in real life.

1cm=1/2mile

1/2cm=1/4mile

How many halves are in 2.5? 5

5 x 1/4=1 1/4miles

Thus…

5 half-cm = 1.25m

2.5cm = ?

2cm / 2.5cm * 1m

2 / 2.5 * 1m

0.8 * 1m

1.8m

/ means division

* means multiplication

2.5cm———?

answer is 2.5/2=1.25m