Problem 1: A salesman put 25 liters of gasoline in his tank. Im the morning, he used 6 ½ liter, in the afternoon he used ⅗ liters. how much oh the gasoline he placed in his tank remanined?
16. what is asked in the problem?
17 what is the hidden question?
18 what operations are we going to used?
19-20 how much gasoline he placed in tank remained?
16. what is asked in the problem?
17 what is the hidden question?
18 what operations are we going to used?
19-20 how much gasoline he placed in tank remained?
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Answer:
16. Gasoline remained in his tank.
17. Total liters of gasoline used.
18. subtraction, addition
19-20.
25 - (6 1/2 + 3/5) =
25 - (7 1/10)
17 9/10 or 17.9 liters