00:01
In order to find the sum of the expression 8 plus 11 plus 22 plus 4, order of operations tells us we should work out this problem from left to right as if reading a book.
00:11
So we'll start with 8 and we'll add 11 to 8.
00:15
Here we have our number line which is going to help us out when we're adding.
00:19
If we count forward 11 spaces from 8, the number which we land on is going to be the sum of 11 and 8.
00:26
So we count forward one space nine, two to ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, seventeen, eighteen, eighteen, nineteen.
00:40
So that's eleven spaces and we've landed on the number nineteen...