math help

What is 100/100 + 9/10?

What is 100/100 + 9/10?

This is how you add

100
100
+
9
10

Step 1

Now we need to make our denominators match.

100 goes into 10 evenly, so we only need to multiply one term to get a common denominator.

Multiply 9 by 10, and get 90, then we multiply 10 by 10 and get 100.

9/10 times 10

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

100
100
+
90
100

Step 2

Since our denominators match, we can add the numerators.

100 + 90 = 190

Answer:

190
100

Step 3

Now, do we need to simplify this fraction?

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

Are both the numerator and the denominator evenly divisible by 2? Yes! So we reduce it:

190
100
÷ 2 =
95
50

Let's try dividing by that again...

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

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

Are both the numerator and the denominator evenly divisible by 5? Yes! So we reduce it:

95
50
÷ 5 =
19
10

Let's try dividing by that again...

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

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

No good. 11 is larger than 10. So we're done reducing.

There you have it! Here's the final answer to 100/100 + 9/10

100
100
+
9
10
=
19
10
© 2014 Randy Tayler