1+ 1=2、 10- 1=9、2+2=4、 1+2=3、9- 1=8、4+4=8、 1+3=4、8- 1=7、3+3=6、 1+4=5、7- 1=6、 6-5= 1、 1+5=6、6- 1=5、4+3=7、 1+6=7、5- 1=4、7-3=4、 1+7=8、4- 1=3、8-3=5、 1+8=9、3- 1=2、 6-6=0、 1+9= 10、 2- 1= 1、 10- 10=0、5+4=9、9-4=5、6+4= 10、2+8= 10。

meaning

It is very important to master the addition and subtraction within 10 in the primary stage of mathematics learning. This is the basis of cultivating pupils' arithmetic ability. At this stage, we can use some simple and interesting formulas to help primary school students consolidate the addition and subtraction operations within 10.

Let's look at the addition within 10. Addition is the operation of adding two or more numbers to get a result. In addition, within 10, we can add the numbers 0 to 9. For example, 2+3 = 5 We can practice addition within 10 by the following formula: 0+ 1 = 1, 2+2 = 4, 3+5 = 8, 6+0 = 6, 8+ 1 = 9.

use

Decimal blocks or counters can be used to help children better understand and calculate addition. Children can put the corresponding number of decimal building blocks or counters together and count the results. Next, let's look at the subtraction within 10. Subtraction is the operation of subtracting another number from one number to get the result. In the subtraction within 10, we can use the numbers 0 to 9 for subtraction.

For example: 5-2 = 3 We can practice subtraction within 10 by the following formula: 6-3 = 3, 4- 1 = 3, 8-6 = 2, 9-0 = 9, 5-5 = 0. Similarly, we can use decimal blocks or counters to help children understand and calculate subtraction. Children can take out the corresponding numbers from a pile of decimal building blocks or counters, and then count the results.

Through these simple addition and subtraction exercises, children can consolidate their understanding of numbers within 10 and cultivate their arithmetic ability. In addition, children can better understand the application of addition and subtraction by combining real-life examples, such as shopping and distributing items. In short, the addition and subtraction within 10 is the basis of primary school students' mathematics learning. Through interesting practice and practical application, help children improve their arithmetic ability and lay a solid foundation for future mathematics learning.