Fast oral calculation age skills Oral calculation is a kind of mathematics that is often used in our lives. For students, it is mainly used in primary school. Mastering certain verbal skills can make math learning get twice the result with half the effort and make children fall in love with learning math. There are many quick skills of oral calculation, which are suitable for different ages. In my opinion, mastering the following quick skills of oral calculation can basically meet the needs of daily study, life and work.

1. Add by ten

If there are two numbers in the formula or several numbers can be added together to get ten, then you can calculate by changing the order of the numbers. For example, 13+8+7, we can switch the positions of 8 and 7, first calculate 13+7, and then add 8 to get the final answer. Doing so can quickly get the answer and improve the efficiency and accuracy of the operation. The method of subtracting and adding ten is the same. First, add the subtractions that can be added to 10, and then subtract them from the minuend to get the answer.

2. Adopt integer method

Is to treat numbers close to 10, 100, 1000 as integers, and then add and subtract. For example, for solving the problem 397+ 123, we can regard 397 as 400, then use 400+ 123 to get the answer 523, and finally subtract 3 to get the final answer 520. Can also be used in subtraction, the operation method is the same.

Use shift method

Shift the number in the formula with the previous number, and then calculate. This is commonly used in elementary school mathematics oral calculation, such as 3-4+5. Many children don't know how to answer. They don't think 3 can be subtracted from 4. In fact, we can get the answer quickly by moving 5 together with the preceding plus sign and converting it into 3+5-4.

In addition, there are specific skills such as complement grammar, split method and bracket method. For students of different levels, they only need to master certain skills. In this regard, how do you educate your children to use fast algorithms? Please leave a message and say it!

The above is about the skills of fast oral calculation of age, and it is about the sharing of mathematics. I have seen the problem-solving skills of age, I hope this will help everyone!