-99
100,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,
* * * * *
That is pure rubbish.
The sum of the numbers 1 to 100 = 100*(100+1)/2, which is 5050
281100
-3888
20
The answer is 1100. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
143
-127
333
20 + 1
-17
no 3 numbers add to equal 10 and multiply to equal 40.
-936
-117