High school mathematics book 2 knowledge point formula
1, what is the difference between the two numbers? It can be said that large numbers are much more than decimals, and decimals are much less than large numbers.
2. Make a big square with at least four identical small squares.
3. Make a big cube with at least eight identical small cubes.
4. Put a square with at least four sticks of the same length. It takes at least six sticks of the same length to make a rectangle.
5. Shopping needs RMB, with one yuan and ten cents, and one yuan needs ten cents.
6, compare the amount of money, the unit is unified and directly compared, the unit is different, and then compare.
7. Pay attention to the calculation of money. Add and subtract only when the units are the same. Fill in 10 to 1 yuan, and fill in 10 to 1.
8. subtract a few cents from a few dollars. There is a clever calculation method. Take 1 yuan for a few dollars, when 10 points.
9. It's easy to add and subtract whole ten. Only ten digits can be counted, and ten digits can be counted as dozens of digits. Only one number needs to be written with 0.
10, even addition and subtraction of whole ten, the calculation order is specified, from left to right, step by step to calculate carefully.
1 1, add digits to two digits, first add one digit to the single digit, then add ten digits.
12, two digits plus whole ten, first add ten digits with ten digits, then add one digit.
13, carry addition is not difficult to calculate, full decimal into one is the key. The figures add up to ten, so remember to enter one from ten.
14, two digits minus one digit, first one digit minus one digit, then ten digits plus ten digits. If you subtract ten digits from two digits, subtract ten digits from the ten digits first and then add one digit.
15, two digits minus one digit, single digit minus, ten digits unchanged, two digits minus integer ten digits minus, ten digits minus, single digits unchanged.
Senior one mathematics knowledge points 1 to 5
Learning point
Understanding of 1 sum number
(1) Counting, reading and writing
(2) the specific size (">, sort
(3) the composition of numbers
(4) Cardinal number and ordinal number
2, the understanding of 0-said no, said the starting point.
3. Calculation:
Addition calculation-understand the meaning and know the plus sign.
Subtraction calculation-understand the meaning and understand the negative sign.
Calculation of correlation (within 5): addition and subtraction of 0.
practise
1+3=() 1+ 1=() 3-3=() 2+3=()
4-4=() 3-3=() 3- 1=() 2-2=()
1+ 1=() 3+ 1=() 2+3=() 1+4=()
1+2=() 3-2=() 4-3=() 2-2=()
1+ 1=() 2- 1=() 3- 1=() 4+ 1=()
2-2=() 4-2=() 3-3=() 2+3=()
4-3=() 2+2=() 3-2=() 2+2=()
4-4=() 3- 1=() 2+2=() 3-2=()
4-4=() 2+3=() 3+ 1=() 3+ 1=()
1- 1=() 4-3=() 4- 1=() 4+ 1=()
3+ 1=() 1+2=() 4-2=() 2-2=()
3- 1=() 3+ 1=() 4+ 1=() 1+ 1=()
2+2=() 1- 1=() 3+ 1=() 2+ 1=()
4+ 1=() 4-4=() 2+ 1=() 3+2=()
2+2=() 4+ 1=() 1- 1=() 2+3=()
1- 1=() 3+2=() 4+ 1=() 1- 1=()
2+3=() 1- 1=() 1- 1=() 3+ 1=()
Mathematics learning methods of first-grade children
Method one
Listen carefully in class and review in time after class. The acceptance of new knowledge and the cultivation of mathematical ability are mainly carried out in the classroom, so we should pay special attention to the learning efficiency in the classroom and seek correct learning methods. In class, you should keep up with the teacher's ideas, actively explore thinking, predict the next steps, and compare your own problem-solving ideas with what the teacher said. However, due to various reasons, there are often some students who can't keep up with the teacher's ideas and have loopholes in their studies. At this time, on-the-job teachers are needed to give one-on-one counseling to students. In the process of tutoring, the teacher will help students recall what they have learned in one day and guide them to correctly master the reasoning process of various formulas. In a sense, this will help students develop a learning style of asking questions when they don't understand.
Method 2
How to cultivate children's verbal ability? The verbal calculation is also satisfactory. It is a calculation method that directly calculates numbers without using calculation tools, mainly relying on thinking and memory. The new syllabus points out that oral calculation is not only the basis of written calculation, estimation and simplification, but also an important part of calculation ability. It can be seen that to cultivate students' computing ability, we must first start with oral computing ability. So how to cultivate students' oral ability? My experience is that it is very important for teachers to read the three-character classics well: "foundation (grasping the foundation), teaching method (teaching method) and practicing method (routine training)" Reading the word "base" well means basic oral calculation. Oral calculation in primary school mathematics teaching can be divided into three categories: basic oral calculation, general oral calculation and special oral calculation. These three kinds of oral calculation are mainly based on the content of basic oral calculation, which is the basis of calculation. Basic oral calculation must require proficiency, and proficiency refers to "blurting out", while the other two types of oral calculation only require proficiency or learning.
Method 3
Hand-brain quick calculation is to use different human organs to simulate the operation of corresponding components and principles of computers, and to simulate computers to develop the computing and counting potential of human bodies. It is realized by simulating the calculation and counting of computer 0 and 1 theory to single digits, and simulating the way (software) of computer inductive processing information. It is not only a calculation method, but also a method to train people's hands and brains to simulate computer rapid operation and counting.
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