22.6 + 63.1 = 87.5, but since u said round to nearest ten, the answer is 90.
If u round ALL numbers, if u round 22.6 u will get 20, round 63.1 and u get 60, add those 2 together and u get 80, u don't round 80, its rounded enough in tens.
Step-by-step explanation: You are rounding each number down not the total sum. If you are asking for the sum of each number to be added and then rounded to the nearest ten, you would get 90. But since you are asking for each individual number, you get 20 + 60 which is 80.
