# How do you evaluate 55+57+58+61+63?

Jun 21, 2017

The answer to $55 + 57 + 58 + 61 + 63$ is $294$ and further explanation is down below!

#### Explanation:

The way we are going to evaluate this problem is going to be like, add first 2 numbers and add the answer to that to the next number and so on. Kind of like a pattern! I hope that makes sense, but if it doesn't, I hope you'll get it soon! :)

OK, now let's start!

$55 + 57 = 112$

Now add $112$ to the next number in the expression. Like,

$112 + 58 = 170$!

You keep doing that till you are finished with all of your numbers!

$170 + 61 = 231$

$231 + 63 = 294$

There you go! The answer is 294 and I hope that you now understood the "pattern" that I used instead of adding all of them together at the same time! I hope that this answer helps you! :)
My source is my mind!

Jun 25, 2017

The answer is $294$. The explanation is given below.

Disclaimer: A bit different technique is used below.

#### Explanation:

My technique is:

As you can see that all the terms in the given problem are near or equal to $55$.

So I say that just multiply the number $55$ as a number of times as there are the digits i.e., $5$.

On multiplying $55 \times 5 = 270$

You get $270$.

Now calculate every term is how much greater than $55$.

You see that;

• $55 - 55 = 0$
• $57 - 55 = 2$
• $58 - 55 = 3$
• $61 - 55 = 6$
• $63 - 55 = 8$

Now just simply add the sum of these differences to the product of $55$ and $5$ i.e., $270$.

$19 + 270 = 294$.