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How to calculate the addition and subtraction within twenty is relatively simple and easy to learn.
How to calculate the addition and subtraction within 20 is relatively simple, easy to learn and intuitive to demonstrate. You can play with children and learn the numbers of non-carry addition and subtraction within 20, such as 1, 1 1-20. The formula is: "minus nine plus one, minus eight plus two, minus seven plus three, minus six plus four, minus five plus five."

What are the simple and easy to learn about addition and subtraction? Isn't there a way for children to do addition and subtraction? Children will naturally count when they see it.

How to teach carry addition in addition and subtraction in 20 minutes: (1) Simple method, remember large numbers in your mind and count down. For example: 8+5, remember 8 in your mind, and then count down to five. (2) Ten methods: If 8+5, 8 plus 2 equals 10, and 5 can be divided into 2 and 3, then 8+5 = 8+2+3 =10+3 =13; Another example is 7+4. If 7 plus 3 equals 10, and 4 can be divided by 3 and 1, then 7+4 = 7+3+1=1=1/.

How to add and subtract kindergarten classes within 50? How to calculate the simple addition and subtraction of kindergarten classes within 50

How simple is the method?

Addition and subtraction within 50 kindergarten classes

How simple is the method?

Addition and subtraction within 50 kindergarten classes

How simple is the method?

Ask, how to teach children addition and subtraction within 20? The first step: let the children learn to count skillfully. These requirements are:

1, can skillfully count down from "1".

2. Be able to count skillfully from a certain number in the middle. For example, the teacher said: count from 4; Count from 12.

3. Be able to count down from a certain number in the middle skillfully. Example: The teacher said: Count down from 4, and count down from 12.

Counting is the learning content of small classes, and our teacher thinks that every child should be able to count. However, we ignore that many children only start counting from "1". If you ask him to count from a number in the middle, they may not know how to count. Or children don't know how to get from 9- 10, 19-20, 29-.

The second step: let children master the relationship between numbers skillfully;

For example, what is in front of 5? What's behind? 8 What's ahead? What's behind? Counting forward from 5, counting backward, counting from

1 1 Count forward and count backward.

The third step is to let children master the relationship between numbers: for example, which is bigger, 7 or 8? 12 or 4, which is bigger?

The fourth step is to let the children learn to read the questions. Many children can read the questions, but they can't understand them. Children know the way of "+"and "-".

But I don't know how to read it. Let the children read it, prepare for the next calculation, and tell them: when you read "add", it is.

Countdown. When you read the minus sign, you count forward.

The fifth step is to teach children to know the unit and ten, so that children can skillfully say what the unit and ten in two digits are.

For example: 15, the unit is 5, and the decimal number is 1.

The sixth step is to teach children to calculate:

1, plus or minus hand index:

Addition, such as: 15+2= We tell children: Keep the big number 15 in mind and point out the small number 2 with your fingers (let children

Put your finger out), there is a "+"in the middle, that is, point your finger from the number after 15, and then follow 15.

It is 16, which means 16 and 17, so it is 15+2= 17.

Subtraction, such as: 15-2= We tell our children: Believe in big numbers 15, and point to small numbers 2 with your fingers (let children

Put your finger out), there is a "-"in the middle, which means counting down from the front of 15, and before 15 is 14.

The last two fingers are 13, so 15-2= 13.

Addition, for example: 15+2= We tell children that the sum of one digit and one digit is 5+2=7, and the sum of ten digits is.

1, then 15+2= 17.

Subtraction, such as: 15-2=, we tell children that the subtraction between one bit and one bit is 5-2=3, and the subtraction between ten bits and ten bits.

1-0= 1, then 15-2= 13.

How to teach 1 addition and subtraction in ten minutes?

Start with addition and subtraction within ten. It can be combined with objects that can be expressed by quantitative concepts in life. Such as apples, oranges, lychees, tomatoes, mangoes, etc. , can improve children's interest and let him know the important role of learning mathematics in life.

2. Consolidate the achievements

Parents should use all available time to ask questions to their children. As long as you have free time, you can ask questions and speak quickly, which will give your child a sense of urgency and exercise his habit of thinking quickly and improving efficiency. Parents can say 3+2, 5+4, 9-3, etc. As long as the child answers correctly, he should be praised, "Great", "Great" and "My child is really smart". The addition and subtraction within 10 should make him particularly skilled before entering 20 and before transitioning to 100. Not too fast, step by step, the best effect.

3. Consulting skills

Addition and subtraction within ten, once again, must make children extremely skilled. Achieve the effect of blurting out. Don't worry. It is necessary to tell children that addition and subtraction are complementary, especially within ten minutes, which helps children understand.

Addition and subtraction within 20 should be based on children's mastery of addition and subtraction within 10. Those within ten are very skilled, and those within twenty can master it quickly. At this stage of consultation, some written calculations are needed. Parents can find a horizontal book and randomly press 1+ 1, 1+2, 1+3 to ask their children questions ... 1+20, 2+6558 on a piece of paper with about ten pages. Up to 19+ 1, the advantage of this question is that any combination of numbers within 20 can be taken into account by children. So is subtraction.

/kloc-the same is true for exercises within 0/00.

4. Regular rewards and punishments

If you want to give your child a regular exercise, you can also give him 50 or 100 questions until the time. After the child finishes, grade him with a striking pen and store it, so that he can feel his little progress and improve his interest in practice. Give a reward for working overtime, and use a small punishment slowly. It depends on the study at that time.

What kind of boxing is easier to learn? Satisfied with the tangled answer, Bigfoot level 5, 20 1 1-07-04 Tai Chi is the most difficult ... I am embarrassed to say this. Learning boxing depends on your needs. If you want to fight in actual combat, I suggest Sanda, not paying attention to flowers, and directly aiming at fighting, which is more useful. If you perform ... I don't understand. Traditional boxing seems to perform well, but I'm not saying that traditional boxing is to show off. The level of a martial art depends on the individual's cultivation level. Follow-up: I downloaded the teaching video of Wing Chun Boxing before, and found it a bit difficult to practice after watching it. I don't know what is easy to learn. I can answer them in actual combat or performance: first of all, I have to understand that any boxing is difficult to practice, right? You think wing chun is difficult because you have studied it specially. If you persist, you won't have to ask questions here, but you are already an expert. Real boxing is not simple, even if it is street self-defense. I'm afraid opportunism won't do. You can consider Sanda, combined with equipment practice, such as nunchakus, and progress will be faster.

The addition and subtraction exercises within ten are 1+ 1=

1- 1=

1+2=

1-2=

1+3=

1-3=

1+4=

1-4=

1+5=

1-5=

1+6=

1-6=

1+7=

1-7=

1+8=

1-8=

1+9=

1-9=

1+ 10=

1- 10=

2+ 1=

2- 1=

2+2=

2-2=

2+3=

2-3=

2+4=

2-4=

2+5=

2-5=

2+6=

2-6=

2+7=

2-7=

2+8=

2-8=

2+9=

2-9=

2+ 10=

2- 10=

3+ 1=

3- 1=

3+2=

3-2=

3+3=

3-3=

3+4=

3-4=

3+5=

3-5=

3+6=

3-6=

3+7=

3-7=

3+8=

3-8=

3+9=

3-9=

3+ 10=

3- 10=

4+ 1=

4- 1=

4+2=

4-2=

4+3=

4-3=

4+4=

4-4=

4+5=

4-5=

4+6=

4-6=

4+7=

4-7=

4+8=

4-8=

4+9=

4-9=

4+ 10=

4- 10=

5+ 1=

5- 1=

5+2=

5-2=

5+3=

5-3=

5+4=

5-4=

5+5=

5-5=

5+6=

5-6=

5+7=

5-7=

5+8=

5-8=

5+9=

5-9=

5+ 10=

5- 10=

6+ 1=

6- 1=

6+2=

6-2=

6+3=

6-3=

6+4=

6-4=

6+5=

6-5=

6+6=

6-6=

6+7=

6-7=

6+8=

6-8=

6+9=

6-9=

6+ 10=

6- 10=

7+ 1=

7- 1=

7+2=

7-2=

7+3=

7-3=

7+4=

7-4=

7+5=

7-5=

7+6=

7-6=

7+7=

7-7=

7+8=

7-8=

7+9=

7-9=

7+ 10=

7- 10=

8+ 1=

8- 1=

8+2=

8-2=

8+3=

8-3=

8+4=

8-4=

8+5=

8-5=

8+6=

8-6=

8+7=

8-7=

8+8=

8-8=

8+9=

8-9=

8+ 10=

8- 10=

9+ 1=

9- 1=

9+2=

9-2=

9+3=

9-3=

9+4=

9-4=

9+5=

9-5=

9+6=

9-6=

9+7=

9-7=

9+8=

9-8=

9+9=

9-9=

9+ 10=

9- 10=

10+ 1=

10- 1=

10+2=

10-2=

10+3=

10-3=

10+4=

10-4=

10+5=

10-5=

10+6=

10-6=

10+7=

10-7=

10+8=

10-8=

10+9=

10-9=

10+ 10=

10- 10=

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