"9 plus a few" PPT free courseware on carry addition within 20

Description

"9 plus a few" PPT free courseware on carry addition within 20

Part One: Introduction to the topic

Students, our school is holding a sports meeting. Do you want to participate? If you want to participate, you have to pass two levels first. Let’s go through them now.

The first level: counting stars.

The second level: oral calculation.

10+5= 10+7= 10+3=

10+1= 10+8= 10+4=

9 plus a few PPT, the second part of the content: new teaching knowledge

1. Perceptual situation map.

The competitions on the sports field are very lively. Please take a closer look. What competitions have the students participated in? Which event is your favorite? What other information is in the picture?

2. Ask questions and learn methods.

Please take a look at how the drinks prepared by the students are arranged?

(1) Use the point method.

(2) Method of receiving numbers.

(3) Make up 10 methods.

3. Learn how to make ten.

"The method of making ten" is to make the larger of the two added numbers into 10. In this question, it is to make 9 into 10. Now ask the students to take out their own sticks and put them around. Learn how to make ten.

9 plus a few PPT, the third part: knowledge sorting

Knowledge point 1: Calculation method of adding a few to 9.

The methods for calculating the number of additions to 9 mainly include the point counting method, the counting method, and the ten-to-ten method. Among them, the ten methods are the simplest.

small exercise

1. Look at the diagram and calculate.

9 plus a few PPT, Part 4: Classroom exercises

1. Calculation questions.

9＋6= 9＋8= 9＋5=

9＋2= 9＋3= 9＋7=

2. Fill in ">", "<" or "=".

9+4 13 9+6 15 9+9 17

9+2 9+4 9+7 9+5 9+8 9+9

3. What is the maximum number that can be filled in?

9＋（ )<15 9＋（ )<17

( )+9<14 9+ ( )<12

9 plus a few PPT, part 5: homework after class

1. Calculate the following questions.

11+2= 15-4= 6+12= 17-4= 15-5=

16+3= 16-5= 2+15= 13-1= 16-4=

2. Decompose the following numbers.

3. I can fill it out quickly.

4. I can do it right.

Keywords: Free download of first-grade mathematics PPT courseware of People's Education Press, download of PPT of adding a few to 9, download of PPT of carry addition within 20, .PPT format;

For more information about the PPT courseware "How many times are added to 9 with carry within 20", please click on the PPT tag of How many are added to 9 with carry within 20?

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Update Time: 2024-10-15

This template belongs to Mathematics courseware People's Education Press First Grade Mathematics Volume 1 industry PPT template

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