math help

What is 9/100 + 3/5?

What is 9/100 + 3/5?

Here's how you add

9
100
+
3
5

Step 1

Now we need to make our denominators match.

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

Multiply 3 by 20, and get 60, then we multiply 5 by 20 and get 100.

3/5 times 20

This gives us a new problem that looks like so:

9
100
+
60
100

Step 2

Since our denominators match, we can add the numerators.

9 + 60 = 69

So what's the answer so far?

69
100

Step 3

Can this fraction be reduced?

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

Nope! So now we try the next greatest prime number, 3...

Nope! So now we try the next greatest prime number, 5...

Nope! So now we try the next greatest prime number, 7...

Nope! So now we try the next greatest prime number, 11...

Nope! So now we try the next greatest prime number, 13...

Nope! So now we try the next greatest prime number, 17...

Nope! So now we try the next greatest prime number, 19...

Nope! So now we try the next greatest prime number, 23...

Nope! So now we try the next greatest prime number, 29...

Nope! So now we try the next greatest prime number, 31...

Nope! So now we try the next greatest prime number, 37...

Nope! So now we try the next greatest prime number, 41...

Nope! So now we try the next greatest prime number, 43...

Nope! So now we try the next greatest prime number, 47...

Nope! So now we try the next greatest prime number, 53...

Nope! So now we try the next greatest prime number, 59...

Nope! So now we try the next greatest prime number, 61...

Nope! So now we try the next greatest prime number, 67...

Nope! So now we try the next greatest prime number, 71...

No good. 71 is larger than 69. So we're done reducing.

There you have it! Here's the final answer to 9/100 + 3/5

9
100
+
3
5
=
69
100
© 2014 Randy Tayler