math help

What is 9/100 + 1/5?

What is 9/100 + 1/5?

This is how we add

9
100
+
1
5

Step 1

Our denominators (bottom numbers) don't match, so we can't add yet.

100 goes into 5 evenly, so we only need to multiply one term to get a common denominator.

Multiply 1 by 20, and get 20, then we multiply 5 by 20 and get 100.

1/5 times 20

We now have a new problem, that looks like this:

9
100
+
20
100

Step 2

Since our denominators match, we can add the numerators.

9 + 20 = 29

Answer:

29
100

Step 3

Now, do we need to simplify this fraction?

First, we attempt to divide it by 2...

Nope. Try the next prime number, 3...

Nope. Try the next prime number, 5...

Nope. Try the next prime number, 7...

Nope. Try the next prime number, 11...

Nope. Try the next prime number, 13...

Nope. Try the next prime number, 17...

Nope. Try the next prime number, 19...

Nope. Try the next prime number, 23...

Nope. Try the next prime number, 29...

Nope. Try the next prime number, 31...

No good. 31 is larger than 29. So we're done reducing.

Congratulations! Here's your final answer to 9/100 + 1/5

9
100
+
1
5
=
29
100
© 2014 Randy Tayler