Add and sumplify 1/4 + 3/10

1/4 + 3/10

find the common denominator which is 20

multiply by 5 for 1/4

1 (5) / 4 (5) = 5/20

multiply by 2 for 3/10

3 (2) / 10 (2) = 6/20

5/20+6/20=11/20

answer:

11/20

11/20

Step-by-step explanation:

first find a common denominator

choices could be 20 or 40

let's use 20

how many times does 4 go into 20? 5 times

1/4 = 5/20

how many times does 10 go into 20? 2 times

3/10 = 6/20

now we can add the fractions because they have a common denominator

5/20 + 6/20 = 11/20

this can not be simplified.