Graduation exams are generally not too difficult. 1. The relationship between standard quantity, comparison quantity and corresponding score rate of comparison quantity and their formulas. 2. The writing and reading of numbers, and the conversion between units and integers, fractions, decimals and percentages. 3. Solving equation, solving ratio, simple operation, oral calculation, estimation and simplified ratio. 4. Find the percentage (such as attendance), travel problems, engineering problems, etc. This is an application problem, depending on what your teacher often says. 5. Area and volume, side length of object, perimeter or proportion of figure, translation and rotation. 6. Statistics (classification, mode, average and median of statistical graphs), positive-negative ratio, positive-negative number, prime number and composite number.

The above is a reference, the examination questions will be different in different regions, but generally you will get the above content. Give a few examples to help you.

1. If a×7 = b÷2(a:b= none of them is 0), then a:b = (): ().

A: B =1:14 Teach the landlord a method. If the results of the above two formulas are 1, then the simplest ratio of A = 1/7, B = 2, 1/7,2 is1; 14