roxy spends 1/5 hour cleaning the table 3/10 hours washing dishes, and 4/5 hour reading a book. How many hours does she spend doing all these activities?

Answer 1

We're going to add all the time she spent doing all these activities.

When adding fractions remember to first find their least common denominator. 10 is the LCD.

Therefore,

1/5 becomes 2/10

3/10 remains the same because it already has a 10 in the denominator

4/5 becomes 8/10

Because they all have the same denominator you can now add the fractions by simply adding up the numerators and placing it over the common denominator.

2+3+8
_____ = 13/10
10

you may leave your answer likes this or make it into a mixed number by dividing 13 by 10 and putting the remainder over 10.

This will then look like this 1 3/10

1 _3_
10