math help

What is 87/100 + 1/10?

What is 87/100 + 1/10?

This is how you add

87
100
+
1
10

Step 1

Now we need to make our denominators match.

Since 10 is evenly divided by 100, we can multiply just one term to get a common denominator.

Multiply 1 by 10, and get 10, then we multiply 10 by 10 and get 100.

1/10 times 10

The problem now has new fractions to add:

87
100
+
10
100

Step 2

Since our denominators match, we can add the numerators.

87 + 10 = 97

The sum we get is

97
100

Step 3

The last step is to reduce the fraction if we can.

To find out, we try dividing 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...

Nope! So now we try the next greatest prime number, 73...

Nope! So now we try the next greatest prime number, 79...

Nope! So now we try the next greatest prime number, 83...

Nope! So now we try the next greatest prime number, 89...

Nope! So now we try the next greatest prime number, 97...

Nope! So now we try the next greatest prime number, 101...

No good. 101 is larger than 97. So we're done reducing.

There you have it! Here's the final answer to 87/100 + 1/10

87
100
+
1
10
=
97
100
© 2014 Randy Tayler