Looking at the addition table within ten horizontally, the result of each row is a number, and the result from top to bottom changes from small to large, with a gradient of 1. Looking vertically at the addition table within 10 minutes, the number at the bottom is the largest, and the result at the bottom is one bigger than the last one. The result of each layer is larger than that of the previous layer 1.

The addition table is a table for finding one-digit addition. List the results of adding any two one-digit numbers into a table, which is called an addition table and can be used by beginners. Commonly used addition tables are 10 and 20. The addition table within 10 is a common formula for junior students, and it is also the basis for advanced students to learn more complex calculations.

Law of addition:

(1) Add two numbers and keep the number unchanged: if one of the two added numbers increases, the other decreases, the other increases and the other decreases.

(2) When two numbers are added, one of them remains the same. If the other number changes, this number will also change, and the change of the result is as big as the change of the addend.

(3) Add the two numbers and exchange positions to get the same number.

Supplementary reading:

Whether viewed vertically or horizontally, the law is actually obvious. Look at the vertical one first.

Looking at the mathematics addition table of the first grade of primary school vertically, the next level of each column is smaller than the previous level 1, and the first column is arranged as 2.3.4.5.6.7. 8.9. 10, the arrangement of the second column is 3.4.5 ... The whole is such a law.

If you look at the first-grade math addition table horizontally, the results of each row in the first-grade math addition table are the same.

In fact, squints also have certain rules:

The rule of oblique view is that the mathematical addition table in the first grade of primary school is similar to the vertical view, and the diagonal is the longest. Also 2.3.4.5.6.7.8.9. 10.