Question

How many blocks in a 10 by 10 grid do you need to shade to represent 8/25?

Answer 1

32 blocks

Explanation:

to solve this question , you could set up a proportion and cross multiply. in a 10 by 10 grid you have 10×10=100 blocks, so:

`(8)/(25) = (x)/(100)`

to find the amount of blocks in a 10 by 10 grid that represents 8/25, cross multiply the proportion and solve for x:

`8(100)=25x`

`800=25x`

`x=32`

so, you'd need to shade 32 blocks.

(a faster way of obtaining the same answer is by simply multiplying
`(8)/(25)` with 100, but cross multiplying is the way i personally prefer to do it)