"Ten minus 8" abdication subtraction within 20 PPT

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"Ten minus 8" abdication subtraction within 20 PPT

The first part: introduction to review, basics of pregnancy

1. Oral calculation.

11-9= 12-9= 8+5= 3+8=

16-9= 17-9= 9+8= 17-9=

2. Fill it out.

8+( )=13 8+( )=16

8+( )=12 ( )+8=14

8+( )=17 ( )+8=11

A dozen minus 8 PPT, the second part: introduction to the situation, asking questions

There are 12 windmills in total.

We want to buy 8.

How many are left?

12－8=

Tens minus 8 PPT, the third part: independent calculation, internalized arithmetic

Set it up with school tools.

12－8=

Breaking the Ten Laws

12-8=4

10-8＝2

2+2=4

Ping Shi method

12-8=4

12-2=10

10-6=4

Want to add and subtract

8+4=12

12-8=4

Ten minus 8 PPT, the fourth part: timely consolidation, expansion and improvement

1. Go around in a circle and do the math.

16－8=

15－8=

2. Do the math.

8＋5= 8＋3= 8+6=

13－8= 11－8= 14－8=

3. Calculate using your favorite method.

10-8= 13-8= 16-8=

11-8= 14-8= 17-8=

12-8= 15-8= 18-8=

Ten minus 8 PPT, Part 5: Class Summary

Classmates, what did you gain from today’s math class?

Alternative exercises

1. Fill in ○ with “＞”, “＜” or “=".

13－8○4 12－8○5 16－8○16－9

17－8○8 15－8○6 11－8○12－9

2. Look at the diagram and calculate.

Keywords: Free download of PPT courseware for mathematics in the second volume of the first grade of the People's Education Press, download of subtracting 8 from a dozen PPT, download PPT of subtraction within 20, .PPT format;

For more information about the PPT courseware "Abdication Subtraction within 20, Subtract 8 from Ten Tens", please click on the Subtraction Subtraction Within 20 PPT, Subtract 8 from Ten Tens PPT tag.

"Ten minus 8" abdication subtraction within 20 PPT download:

"Ten minus 8" Subtraction within 20 PPT download Part 1: Review introduction 1. Drumming and flower passing game Question: Tell me how you calculate. 2. Give it a try Questions: 1. Take away 9 flowers from 12 flowers. How do you want to take them? Why? 2. How many are left?

"Subtracting 8 and 7 from a dozen" PPT courseware for subtraction within 20:

"More than ten minus 8 and 7" Subtraction within 20 PPT courseware 2 Teaching objectives Learn to calculate the subtraction of eight and seven from ten on the basis of ten minus nine. Use a variety of methods to solve problems and cultivate students' thinking flexibility. Preliminary understanding: the minuend does not change, the larger the subtrahend, the better the result..

"Subtracting 8 and 7 from a dozen" PPT courseware for subtraction within 20:

"Subtracting 8 and 7 from a dozen" PPT courseware on abdication and subtraction within 20. Teaching objectives 1. Learn to calculate ten minus eight and seven on the basis of ten minus nine. 2. Use a variety of methods to solve problems and cultivate students' thinking flexibility. 3. The initial penetration minuend remains unchanged, the larger the minuend is,...

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Update Time: 2024-09-09

This template belongs to Mathematics courseware People's Education Press First Grade Mathematics Volume 2 industry PPT template

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