math help

What is 87/100 + 2/4?

What is 87/100 + 2/4?

Here's how we add

87
100
+
2
4

Step 1

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

100 goes into 4 evenly, so we only need to multiply one term to get a common denominator.

Multiply 2 by 25, and get 50, then we multiply 4 by 25 and get 100.

2/4 times 25

This gives us a new problem that looks like so:

87
100
+
50
100

Step 2

Since our denominators match, we can add the numerators.

87 + 50 = 137

That gives us an answer of

137
100

Step 3

Can this fraction be reduced?

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...

Nope. Try the next prime number, 37...

Nope. Try the next prime number, 41...

Nope. Try the next prime number, 43...

Nope. Try the next prime number, 47...

Nope. Try the next prime number, 53...

Nope. Try the next prime number, 59...

Nope. Try the next prime number, 61...

Nope. Try the next prime number, 67...

Nope. Try the next prime number, 71...

Nope. Try the next prime number, 73...

Nope. Try the next prime number, 79...

Nope. Try the next prime number, 83...

Nope. Try the next prime number, 89...

Nope. Try the next prime number, 97...

Nope. Try the next prime number, 101...

No good. 101 is larger than 100. So we're done reducing.

Congratulations! Here's your final answer to 87/100 + 2/4

87
100
+
2
4
=
137
100
© 2014 Randy Tayler