Question

explain how modeling subtraction with fraction strips is different from modeling addition with fraction strips

Answer 1

When subtracting with fraction strips, you are taking strips away.
When adding with fraction strips, you are adding more strips.

Answer 2

`(3)/(5) + (1)/(5) = (4)/(5)`

`(3)/(5) - (1)/(5) = (2)/(5)`

Explanation:

Here let's take like denominators fractions.

Let's consider two fractions
`(3)/(5), (1)/(5)`

Here the denominators of the fractions is the same.

So, take two strips of the same size and divided into 5 equal parts and shade 3 parts in one strip and shade 1 part in another strip.

Addition

When we add the fractions, we add the shaded parts.

3 + 1 = 4

The total number of equal parts remains the same (5).

`(3)/(5) + (1)/(5) = (4)/(5)`

Subtraction

When we subtract the fractions, we remove 1 shaded part from 3 shaded part.

3 - 1 = 2

The total number of equal parts remains the same. which is 5.

`(3)/(5) - (1)/(5) = (2)/(5)`