A sum has to include two or more numbers in the calculation.
51
n + 51
38+51 = 89
The sum of the numbers between 51 and 150 is equal to 10050 - or 50 x 201 - as there are 50 lots of 201 in the sum.
The consecutive integers whose sum is 51 are 16, 17, and 18.
It is: 10 plus 51 = 61
-42
51 + 57 = 108
The sum of 19 and 32 is 51.
51 sum means add
51
The sum of the first 10 counting numbers (1-10) is 51.