math help

What is 100/100 + 3/11?

What is 100/100 + 3/11?

Here's how we add

100
100
+
3
11

Step 1

Of course, you can't add two fractions if the denominators (bottom numbers) don't match. To get a common denominator, multiply the denominators together. Then we fix the numerators by multiplying each one by their other term's denominator.

Now you multiply 100 by 11, and get 1100, then we multiply 100 by 11 and get 1100.

100/100 times 11

Do the same for the second term. We multiply 3 by 100, and get 300, then multiply 100 by 11 and get 1100.

3/11 times 100

The problem now has new fractions to add:

1100
1100
+
300
1100

Step 2

Since our denominators match, we can add the numerators.

1100 + 300 = 1400

The sum we get is

1400
1100

Step 3

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

To find out, we try dividing it by 2...

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

1400
1100
÷ 2 =
700
550

Now, try the same number again.

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

700
550
÷ 2 =
350
275

Now, try the same number again.

Nope. Try the next prime number, 3...

Nope. Try the next prime number, 5...

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

350
275
÷ 5 =
70
55

Now, try the same number again.

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

70
55
÷ 5 =
14
11

Now, try the same number again.

Nope. Try the next prime number, 7...

Nope. Try the next prime number, 11...

Nope. Try the next prime number, 13...

No good. 13 is larger than 11. So we're done reducing.

Congratulations! Here's your final answer to 100/100 + 3/11

100
100
+
3
11
=
14
11
© 2014 Randy Tayler