1. There is a test ratio, such as: A divided by B equals three quarters, and find the ratio of A and B.. For such a topic, three quarters is equal to the ratio of two numbers. A comes first and B comes last, which is 4: 3.
2. Test the score multiplication and division method, and pay attention to the correct calculation.
3. Find the law of fractions: Generally speaking, the denominator has the law of denominator and the molecule has the law of molecules. Disassembling the denominator of a molecule is as simple as finding the law of integers. The special case is that the preceding number is divided by the following number.
4. Round. The perimeter formula and area formula of a circle should be remembered that there is no annular area.
5. The application of fractional multiplication and division should be clearly seen.
Add a point: the fractional multiplication and division method accounts for 70%, the ratio accounts for 20%, and the circle only accounts for 10%.