Question

2 rulers cost 1.20 then how much does 6 ruler’s cost

Answer 1

$3.60

Explanation:

First lets find out what 1 ruler is.

If 2 rulers cost $1.20 divide it by 2 =

$ .60 .

Now we know that 1 ruler is $ .60 .

Lets multiply 6 x .60 .

What I like to do is to move the number by 1 decimal place ( to make easier ) :

.60 —> 6.0 .

Now lets multiply it 6 x 6 = 36.

Since, We moved the decimal place now lets move it back by 1 decimal place :

36 —> 3.6 .

Answer : 3.6