Current location - Training Enrollment Network - Mathematics courses - The average score of Xiao Ming's first five math exams was 88. How many times does Xiaoming have to get a perfect score to get an average score of 92.5?
The average score of Xiao Ming's first five math exams was 88. How many times does Xiaoming have to get a perfect score to get an average score of 92.5?
100 minutes three times.

The expected average score is 92.5, which means that the previous exam was * * * dive (92.5-88)×5 = 22.5.

Every time you get a perfect score, you can make up the gap of 100-92.5 = 7.5. So at least 22.5÷7.5 = 3 full marks is required. (Indispensable here, rounded up. )

Mathematical problem function:

1, for students

Test students' mastery of mathematics and prescribe the right medicine.

2. For the field of mathematics

Can evolve into mathematical conjecture and mathematical theorem.

3. For other disciplines

You can turn physical and other scientific problems into mathematical problems and solve them mathematically.