Step-by-step explanation:

Answer:
97
Step-by-step explanation:
those numbers are all 5 apart so 5 x 31 is 155. 252-155 is 97 you could also find the same answer by subtracting 5 from 252 31 times on a calculator which is essentially the same as the above explanation but helps if you dont
know how to multiply
Answer:
-2, -1/2
Step-by-step explanation:
Answer:
67.3
Step-by-step explanation:
Since you can only round to one decimal point we look at the last digit which is 8 thus we round up to 67.3