how to subtract fifth grade fraction

Question

1 3/5

-   4/5 

 How do we subtract this problem.were does the one solve .

Answer 1

1 ³/₅ -  ⁴/₅ 

You can think of this as similar to the old math problems where the ones column doesn't have enough, so you borrow from the tens column.

Ex:

 

  ²3¹5

   -18

------

    17

 

The same is going on here. We don't have enough of the fraction, so we go to the ones column and convert that to a fraction:

1 ⇒ ⁵/₅

⁵/₅ + ³/₅ = ⁸/₅

 

Now let's take another look at the equation with the converted 1:

⁸/₅ - ⁴/₅ = ⁴/₅

4/5 has no common factors, so that's our final answer.

Answer 2

1 3/5 - 4/5        convert mixed number to improper fraction

8/5 - 4/5           subtract

4/5

Answer 3

First, we want to convert the mixed number into an improper fraction.  To do this, we multiply the whole number by the denominator.  Then add the result to the numerator.  This is the numerator of the new fraction.  We keep the denominator.

 

1 3/5 is the mixed number.

 

 

1 3/5 = 8 / 5

 

 

Now we can subtract.  Remember, when adding and subtract fractions, we want them to have the same denominator.

 

(8 / 5) - (4 / 5) = 4 / 5