What are 1 ten-step method and ten-step method in mathematics in the first grade of primary school? Ten-level method, also known as ten-level method, is to turn the carry addition of numbers within 20 into familiar problems for first-year students, simplify the complex and turn the small into the big.

For example, to calculate 9+7, we should first divide 7 into 1 and 6, because 9 just lacks 1, so we should divide 7 into 1. So 9+7, we need to use two-step decomposition to calculate 9+ 1= 10 and 10+6= 16, and finally calculate 9+7 = 16.

Therefore, it is necessary for children to clearly remember the formulas "9 to 1", "8 to 2", "7 to 3", "6 to 4" and "5 to 5".

2. Decimal method refers to subtracting the subtraction with 10 and adding the remainder to the single digits when the single digits are not reduced enough.

For example, 16-9, first divide 16 into 10 and 6. When the number of decimal places is not enough, subtract the subtraction from 10, that is, subtract 9 from 10, and add 1 calculated from19 to the previous 6.

How to calculate the method of breaking ten in the second volume of mathematics in the first grade of primary school Because the students in the first grade of primary school are familiar with the addition and subtraction within 10, they use the method of breaking ten to calculate. For example, for the problem of 13-6, we first divide 13 into 3 and 10, then subtract 6 from 10, and add the 4 of 10-6 to the previous 3 (). Now we advocate addition and subtraction.

When the unit is not reduced enough, subtract the subtraction with 10, and add the remainder with the number in the unit, that is, break the ten method.

For example, for the problem of 17-9, first divide 17 into 10 and 7, then subtract 9 from 10, and then add 10-9 to get 1.

The Ten-Level Algorithm of Math Problem 13-7 in the First Grade of Primary School

7 is divided into 4 and 3. First use 13-3= 10, and then use 10-4=6.

Therefore, 13-7=6.

What do you usually study in mathematics in the first grade of primary school? The first-grade math coward wants to study further.

Do not forget to inspire and give gifts to our compatriots in the motherland. He founded the Li Ka-shing Foundation Tumeizi on 1980.

Can tension be learned online?

They have a lot of material wealth, but they are extremely poor in spirit. Permissible amine

How to calculate 99 for ten methods of expanding peace taught in the first grade of primary school?

The math problem of the first grade in primary school is O=4 0+4=4.

1+3=4

2+2=4

3+ 1=4

4+0=4

Math problem 7 = 5 () = ()-1= () = () = ()-() 7 = 5 (2) = (8)-1= (1)+(6) = (3)+

Breaking Ten Laws in the First Grade of Primary School 98-63 Breaking Ten Laws in the First Grade of Primary School 98-63

98-63

=98-60-3

=38-3

=35