Solve.An oil tank holds 280 gallons of oil. On March 1st, the gauge showed it to be 
full. At the end of the month, the tank was 
full. How much oil was used in March?
Fill in the blank(s) with the appropriate word(s).
175 gallons
| March 1: | 280 gal ×  = 245 gal |
| March 31: | 280 gal ×  = 70 gal | 245 - 70 = 175 |
Mathematics
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