"Continuous addition, continuous subtraction and mixed addition and subtraction" PPT on addition and subtraction within 100 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
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Authoritative PPT Summary
"Continuous addition, continuous subtraction and mixed addition and subtraction" PPT on addition and subtraction within 100
Part One: Objectives of this Section
01 Master the method and simple writing method of vertical calculation of continuous addition and continuous subtraction, further consolidate the addition and subtraction of two-digit numbers, and be able to calculate questions of continuous addition and continuous subtraction flexibly and correctly.
02 Cultivate the ability of correct calculation and transfer, and develop the awareness and ability to solve simple practical problems.
03 Cultivate good study habits that are serious and careful.
Mixed PPT of continuous addition, continuous subtraction and addition and subtraction, part 2: introducing new lessons
Tell me what mathematical information you discovered?
initial perception
How to calculate, please give it a try.
First, count the pumpkins picked by the first group and the second group:
28+34=62 (pieces)
Plus the pumpkins picked by the third group:
62+22=84 (pieces)
Oral answer: A total of 84 pumpkins were picked.
Mixed PPT of continuous addition, continuous subtraction and addition and subtraction, part three: in-depth exploration
28＋34＋22＝84
Can they be written together?
This is easier.
Tell me which writing method suits you.
There were 84 large pumpkins in total. Uncle Li took away 40 and Uncle Wang took away 26. How many are left?
84-40-26=18 (pieces)
Oral answer: There are 18 left.
Can you tell me how to calculate continuous addition, continuous subtraction, and mixed addition and subtraction operations?
When calculating continuous addition, continuous subtraction, and mixed addition and subtraction in vertical form, the same digits must be aligned. If there are parentheses, the ones inside the parentheses must be calculated first.
When calculating continuous addition, continuous subtraction and mixed addition and subtraction in vertical form, start from the ones digit.
When calculating continuous addition, continuous subtraction and a mixture of addition and subtraction in vertical form, for addition: if the ones digit is full, advance 1 to the tens digit; for subtraction: if the ones digit is not enough, move back 1 from the tens digit.
Mixed PPT of continuous addition, continuous subtraction and addition and subtraction, Part 4: Consolidation practice
1. Use vertical calculation.
37＋28＋19＝ 52-16-28＝
2. Count from left to right.
3. Math Clinic.
4. Solve the problem.
(1) Dad bought a pair of shoes, a hat and a pair of trousers. How much did it cost in total?
42＋15＋36＝93 (yuan)
(2) What two items can mom buy with 100 yuan? How much money do you get back?
100-42-15＝43 (yuan)
5. The flower shop originally had 92 flowers, of which 45 were sold in the morning and 36 in the afternoon. How many branches are left?
Method 1: 92-45-36=11 (branch)
Method 2: 92-36-45=11 (branch)
Method 3: 92-(45+36)=11 (branch)
Mixed PPT of continuous addition, continuous subtraction and addition and subtraction, Part 5: Summary of this section
01 When using vertical calculations to calculate continuous addition, continuous subtraction and mixed addition and subtraction, the same digits must be aligned.
02 When calculating continuous addition, continuous subtraction and mixed addition and subtraction in vertical form, start from the ones digit.
03 When calculating continuous addition, continuous subtraction and mixed addition and subtraction using vertical expressions, for addition: if the ones digit is full, advance 1 to the tens digit; for subtraction: if the ones digit is not enough, move back 1 from the tens digit.
Mixed PPT of continuous addition, continuous subtraction and addition and subtraction, part 6: assignments
Complete 2.3.1 continuous addition, continuous subtraction and mixed addition and subtraction homework online.
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"Continuous addition, continuous subtraction and mixed addition and subtraction" Flash animation courseware 2:
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"Continuous addition, continuous subtraction and mixed addition and subtraction" PPT courseware:
"Continuous addition, continuous subtraction and mixed addition and subtraction" PPT courseware 5+( )+( ) =( ) 8-( )-( )=( ) 4+3+( )=( ) 10-( )-( )=( ) The animals are lining up to do exercises. There are 4 animals on the left side of the puppy and 3 animals on the right side. Guess, where the puppy is standing...
"Continuous addition, continuous subtraction and mixed addition and subtraction" Flash animation courseware:
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