Mica has 5.3 gallons of gas left in the tank of her car. Her car gets 30 miles to the gallon on the highway. She wants to travel
from her home to her brother’s house, which is 120 miles of highway driving. About how many gallons of gas will Mica have left after she reaches her brother’s house?
A way you can show work is just not use the commas then subtract then put the commas in when you're done. And, if the bigger number isn't as big or has as many numbers behind the decimal as the first one, add a zero at the end.
