Answer:
it's times 4 every time
Step-by-step explanation:
4.5 times 4 is 18 etc
The values of a and b equals 10
Heres a trick i learned look at the digit your rounding look to your right is it 5 or higher? yeas add 1 more to the one you are rounding if not then you drop the numbers after the one you are rounding so 8.54 is now just 8.5
