"Addition and Subtraction Mixing" 6-10 understanding and addition and subtraction PPT teaching courseware

Description

"Addition and Subtraction Mixing" 6-10 understanding and addition and subtraction PPT teaching courseware

Part One: Review Import

1. Oral calculation.

4+3+3＝ 9-5-2＝

3+4+0＝ 10-3-7＝

5＋1＋3＝ 7-0-6＝

Addition and subtraction mixed PPT, part 2: introduction of new knowledge

Garfield likes to eat fish very much. Jon thought that Garfield was going to lose weight, so he didn’t want to feed Garfield 8 fish. He fed Garfield 3 fish for the first time and 2 fish for the second time. At this time, Garfield still wanted to eat 3 fish. fish, but was taken by Jon. So, how many fish are left?

Today, let us continue to study and discuss!

New knowledge exploration

4+3-2=

4-2+3＝

Summary

Continuous addition, continuous subtraction and mixed addition and subtraction can be calculated from left to right.

Addition and subtraction mixed PPT, part 3: classroom exercises

4+5 - 3 = 10 - 1 +1 =

1+9 - 6 = 9 - 2 +2 =

4+6 - 2 = 10 - 3 +2 =

5+4 - 1 = 8 - 4 +3 =

2+5 - 2 = 9 - 3 +1 =

Summary

If you subtract a certain number from a number and add a certain number, the final result will remain the same number;

Similarly, if you add a number to another number and then subtract another number, the final result will still be that number.

Addition and subtraction mixed PPT, part 4 content: improving practice

Xiaohua is playing a game. Every time 4 or more blocks come together, they will disappear.

Xiaohua wanted to stack 10 cubes. He stacked 4 cubes the first time, 3 cubes the second time, and 3 cubes the third time. How many cubes should he stack the fourth time?

Addition and subtraction mixed PPT, Part 5 content: Classroom activities

Pendulum addition and subtraction

1. The teacher prepares some calculations and removes or covers the addition and subtraction signs;

2. The teacher draws or the students put the plus or minus signs on the podium to make the equation true.

Addition and subtraction mixed PPT, part 6: after-class exercises

Mom and dad will give you pocket money, and you will use it to buy things. In this process, there are additions and subtractions. Think about it, what other similar situations are there in life?

Keywords: People's Education Press Mathematics PPT courseware for first grade, free download, mixed addition and subtraction PPT download, 6-10 recognition and addition and subtraction PPT download, .PPT format;

For more information about the PPT courseware "Addition, Subtraction and Mixing 6-10 Understanding and Addition and Subtraction", please click on the Addition and Subtraction Mixing PPT 6-10 Understanding and Addition and Subtraction PPT tab.

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 3):

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational Numbers and Their Operations PPT (Lesson 3) Part One Content: Learning Objectives 1. Master the skills of mixed operations of rational number addition and subtraction, and perform skilled operations. 2. Gain problem-solving skills through reflection on the process of solving simple practical problems.

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 2):

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational Numbers and Their Operations PPT (Lesson 2) Part One: Review of Old Knowledge The mixed operations of addition and subtraction of rational numbers can be calculated from left to right according to the order of operations, in which the operation between each two numbers According to the rules of addition or subtraction...

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 1):

"Mixed Operations of Addition and Subtraction of Rational Numbers" Rational numbers and their operations PPT (Lesson 1) Part 1: Review of old knowledge 1. What are the rules of addition and subtraction of rational numbers respectively? The addition rules of rational numbers: (1) When adding two numbers with the same sign, take the same sign and put...

File Info

Update Time: 2024-09-26

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

Preview