Question

0.5 gallons plus 0.5 gallons plus 2 gallons plus 1gallon basicly i need to know how to add gallons.

Answer 1

The answer would be 4 gallons.
You add them like you would any other decimals and numbers. .5+.5=1 then 2+1+1=4

Answer 2

Answer: 5 gallons

Step-by-step explanation: the gallons are in decimal points. 1/2 + 1/2 + 2 + 1 = 5. the .05 and 1/2 are the same thing. the .5 + .5 equals 1