math help

What is 100/24 + 1/10?

What is 100/24 + 1/10?

This is how you add

100
24
+
1
10

Step 1

Can you add yet? Nope! The denominators don't match. We need a common denominator. So next we take both denominators and multiply them. Next, take each numerator and multiply it by the denominator of the other term.

So, we multiply 100 by 10, and get 1000, then we multiply 24 by 10 and get 240.

100/24 times 10

Now for the second term. You multiply 1 by 24, and get 24, then multiply 24 by 10 and get 240.

1/10 times 24

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

1000
240
+
24
240

Step 2

Since our denominators match, we can add the numerators.

1000 + 24 = 1024

That gives us the sum, which is

1024
240

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:

1024
240
÷ 2 =
512
120

Let's try dividing by that again...

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

512
120
÷ 2 =
256
60

Let's try dividing by that again...

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

256
60
÷ 2 =
128
30

Let's try dividing by that again...

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

128
30
÷ 2 =
64
15

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...

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...

No good. 17 is larger than 15. So we're done reducing.

There you have it! Here's the final answer to 100/24 + 1/10

100
24
+
1
10
=
64
15
© 2014 Randy Tayler