1, inverse algorithm
An important significance of learning mathematics is to exercise thinking. When everyone is thinking in a fixed direction, but you are thinking in the opposite direction alone, this way of thinking is called reverse thinking. Dare to think in the opposite direction, let thinking develop in the opposite direction, explore deeply from the opposite side of the problem, establish new ideas and create new images.
2. Borrow figures and round them off
Rounding is to piece together a number of very scattered numbers into a ten-item integer. If you can't round up, you can add up the sum of the differences, then find a number larger than it for easy calculation and add one.
3, phase elimination method
In the seventh grade mathematics operation, a series of scores are often added or subtracted, and the calculation process of these scores will be more complicated. However, the characteristic of this deformation is that after splitting each item in the original series into two items, most of the items in the middle cancel each other out, leaving only a limited number of items.
Ways to learn mathematics well:
1, preview before class.
Prepare well before class, so that you can better digest and absorb the knowledge that you can't learn in math class. Preview can understand the basic concepts and difficulties of knowledge points in advance and deepen the understanding of knowledge points through thinking and practice.
You can also cultivate self-study ability, take notes in advance in the preview process, and consolidate knowledge points. Preview is also a part of the study plan, which can help us grasp the study progress and lay the foundation for the follow-up study. In a word, it is very important to prepare well before class in order to learn math well.
Step 2 review
The secret of learning mathematics well lies in reviewing. Like movies, you need to review and arrange your notes carefully in class, and you should develop the habit of reviewing in time. Reviewing in time can consolidate what you have learned and make it more systematic and profound.
At the same time, we should do exercises in time, consolidate knowledge points and improve the memory effect. Review is the key to improve math ability. Only by reviewing regularly can we really master what we have learned and learn from time to time.