Question

Find the sums and show work
1+2+3+ ... +498+499+500

Answer 1

n(n+1)/2 i think with n being the number of numbers

Answer 2

write those all hence in this way

1+499=500
2+498=500
3+497=500

Answer 3

at finaly you need numerating how many from 500 there are ?

Answer 4

multiply 500 with this get number and will get the result

Answer 5

What he said. You have 250 sets of 500 by making 500 though 499
=1, 498 +2 etc etc but you also have 500 + 0 so you have 251 sets of 500. 251*500= 125500.