"How many numbers are added to 10, how many are added to tens and the corresponding subtractions" PPT on the understanding of each number from 11 to 20

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"How many numbers are added to 10, how many are added to tens and the corresponding subtractions" PPT on the understanding of each number from 11 to 20

Part One: Review Import

1. Oral calculation.

6+4＝ 9－7＝

7+0＝ 10－10＝

6＋3＝7－6＝

Skills induction

Whether it is addition and subtraction within 10 or addition and subtraction within 20, you can use counting methods, drawing methods, small square (small stick) algebra methods, calculation methods, etc. to perform calculations.

You need to slowly become proficient in calculations, so please don’t be impatient.

How many are added to 10, how many are added to tens and the corresponding subtraction PPT, the second part: exploration of new knowledge

You tell me and I answer.

1 ten sum

1 piece

1 ten sum

2 pieces

You can dial it on the counter.

10＋3＝13

13-3=10

13-10=3

How many are added to 10, how many are added to tens and the corresponding subtraction PPT, the third part: summary

1. If the positions of the addend and the addend are exchanged, the result will be the same.

2. The minuend and the subtrahend cannot exchange positions. If the positions are exchanged, the result cannot be obtained at the current learning stage. That is, the minuend is generally greater than the subtrahend.

How many are added to 10, how many are added to tens and corresponding subtraction PPT, Part 4: Classroom Activities

Let the equation hold

1. The teacher lists the calculation formulas for addition and subtraction within 20, and removes the plus and minus signs.

2. The teacher randomly selects students to come on stage and fill in plus or minus signs or numbers to make the equation true.

3. The teacher can also ask students to fill in whether they are greater than or less than

Adding a few to 10, adding a few to tens and corresponding subtraction PPT, Part 5: After-class exercises

The sports meeting will be held in 10 days. What day will the sports meeting be held on?

5+10=15

Follow your father and mother (or grandpa and grandma) to the fruit supermarket and see if you can figure out the price of the fruit and how much you need to pay in the end?

Keywords: Free download of first-grade mathematics PPT courseware from People's Education Press, download of PPT for adding a few to ten, adding a few for tens and corresponding subtractions, download of PPT for understanding of numbers from 11 to 20, in .PPT format;

For more information about the PPT courseware "Understanding of Each Number from 11-20: 10 Adding to Ten, Adding to Ten, and Corresponding Subtractions" PPT courseware, please click on the "Understanding of 11-20 Numbers" PPT 10 Adding to Ten, Adding to Ten and Corresponding Subtraction PPT Tags.

"How many numbers are added to 10, how many are added to tens and the corresponding subtractions" PPT download on the understanding of each number from 11 to 20:

"Add a few to 10, add a few to tens and the corresponding subtractions" PPT download on the understanding of each number from 11 to 20 Part 1: Review and import Fill in (1) The sum of 1 tens and 5 ones is ( ). (2) 12 is composed of ( ) tens and ( ) ones. (3) The sum of 3 ones...

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Update Time: 2024-07-08

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

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