415 + 815 + 1315 = 2545
10 + 3 + 412 - 10 = 415
It is 415 plus 375 equals 790
To calculate the sum of 49 plus 49 plus 49 plus 49 plus 49, you would multiply 49 by 5, which equals 245. This is because addition is a form of repeated multiplication. So, 49 multiplied by 5 is 245.
The answer is: 477
51766
772
4849494949505050------394
363 + 52 = 415
29
349
49 plus 10 equals 59.