1. Learn to look at two conditions of oral application questions and ask a question. Answer correctly on the basis of understanding.

2. Cultivate students' awareness of estimation.

Teaching emphasis: inspire students to learn to look at pictures and dictate application questions. Two conditions and one question.

Teaching difficulty: correct expression

Teaching aid preparation: projection, card

Teaching process:

First, oral calculation:

27+52 1+77+ 1360- 1338+25 18+ 10

1 1+2 1 18+720+5362- 1873+6 14+52

Fill in the box:

□-38=47□-23=60□+20=7856-□=30

Second, explore new knowledge:

1. Guide students to look at pictures and solve the problem of picture application.

A, guide the students to look at the pictures and talk about the meaning.

B, discuss what you want to buy? How much did it cost?

C, group activities, talk to each other.

2. Solve application problems independently

A, look at the picture and say the meaning.

B, independent formula

C. What other questions can be asked and answered independently?

Third, consolidate:

Show me the chart. In short, the students say there is any movement in the picture.

Look at the pictures, ask questions and answer side by side.

Fourth, the game:

1, guessing game

Step 2 line up the scores

Five, the class summary:

Students, what we are practicing today is a picture application problem. First of all, we should make clear the meaning of the problem, observe it carefully and calculate it carefully. If the problem is summation, it must be calculated by addition. If the problem is difference, the remainder should be calculated by subtraction.

Blackboard design:

Picture application problem

15+50=65

15- 10=5

Teaching review: