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Skills of solving application problems in the second grade of primary school
# Grade 2 # Introduction Application problem can be said to be the most important content in primary school mathematics and an important way to cultivate students' mathematical thinking and problem-solving ability. It is very important to do application problems well. Application problems are an important way to test students' mastery, and primary school students cultivate their mathematical thinking ability and problem-solving ability in the process of solving application problems. The following is the relevant information, I hope it is beneficial to your spleen.

First, the application of addition

sue for peace

Example: 1, one number is 9 and the other number is 13. What is the sum of these two numbers? 9+ 13=2 1

How much is a * * *?

Example 1. Xiaoming has five apples and Xiaohong has eight apples. How many apples do Xiaoming and Xiaohong have? 5+8= 13 (piece)

2.2 1 class 45, class 22 48, how many people are there in class 1? 45+48=93 (person)

Other types of summation problems

Example: 1, 18 pieces of wood have been shipped away, leaving 25 pieces. How many pieces are there in this pile of wood? 18+25=4 1 (root)

Second, the difference in the application of subtraction

Example: 1, one number is 19 and the other number is 13. What's the difference between these two figures? 19- 13=6

How much more?

Example: 1, Xiaoming has 15 apples, and Xiaohong has 8 apples. How many apples does Xiaoming have than Xiaohong? 15-8=7 (piece)

How much is missing?

Example: 1, Xiaoming has 15 apples, and Xiaohong has 8 apples. How many apples is Xiaohong less than Xiaoming? 15-8=7. What's the difference?

Example: 1, Xiaoming wants to make 15 red flowers. Xiaoming has already bloomed eight red flowers. How many red flowers does Xiaoming want to open? 15-8=7 (flowers)

How much is left

For example: 1. A rope is 47 meters long and takes 28 meters. How many meters are left? 47-28= 19 (m)

Third, the application of multiplication

The same arrangement

For example: 1. There are three peaches in each plate and five peaches in one plate. How many peaches are put in these five plates? 3×5= 15 (piece)

2. There are 5 cats in each row and 4 cats in each row. How many kittens are there in a row? 5×4=20 (only)

3. The students are rowing. There are three students on each boat. How many students are there on three ships? 3×3=9 (name)

4. How many gloves are there in a pair and three pairs? 2×3=6 (only)

A car has four wheels. How many wheels do four cars have? 4×4= 16 (piece)

Multiple problems

For example: 1. Xiaoming has seven chickens, and the number of ducks is four times that of chickens. How many ducks does Xiaoming have? 7×4=28 (only)

The kitten is seven years old, and his father is five times his age. How old is dad this year? 7×5=35 years

Fourthly, the average distribution problem of division application problem.

Example: 1, a * * * has 24 apples, which are distributed to 4 children on average. How many apples does each child get? 24÷4=6 (piece)

There are 48 rubber balls, and there are 8 in each basket. How many baskets can you put? 48÷8=6 (basket)

3. There are 72 sheets of white paper, and every 8 sheets are set as 1. How many copies can I order? 72÷8=9 (Ben)

Buy pens with 20 yuan money, each 5 yuan. How many pens can I buy? 20÷5=4 (branch)

5. 56 extra-curricular books, divided into 7 groups. How many books are there in each group? 56÷7=8 (Ben)

Multiple problems

Example: 1, Xiaohong has 28 apples. Xiaohong has four times as many apples as Xiaoming. How many apples does Xiaoming have? 28÷4=7 (pieces)

Grandma Zhang keeps 8 chickens and 72 ducklings. How many times does the duckling have? 72÷8=9

Grandma is 36 years old and her mother is six times as old as her daughter. How old is her daughter this year? 36÷6=6 (years old).

The school bought 28 basketballs, four times as many as football. How many footballs did you buy? 28÷4=7 (pieces)

5. There are 42 white flowers, 7 times as many as safflower. How many red flowers are there? 42÷7=6 (flowers)

6. There are 72 non-non game cards, and Yang Yang has 8. How many non-non game cards are there in Yang Yang? 72÷8=9

Note: the unit is double-word without unit.