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

Question

Roman Alvarez · Accepted Answer

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

Disclaimer: A bit different technique is used below.

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 #55xx5 = 270# You get #270#. Now calculate every term is how much greater than #55#. You see that; Now just simply add the sum of these differences to the product of #55# and #5# i.e., #270#. #19 + 270 = 294#. This is the answer. This procedure might look complicated but is a matter of seconds when you actually think about it.

Autumn Arnold · Answer

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

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!

Nova Allen · Answer

undefined To evaluate the sum of 55, 57, 58, 61, and 63, simply add these numbers together:

$$ 55 + 57 + 58 + 61 + 63 = 294 $$

Therefore, the sum of these numbers is 294.