"Add two-digit numbers to two-digit numbers" PPT courseware for addition and subtraction within 100

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Jiangsu Education Edition First Grade Mathematics Volume 2	pptx	6 MB

"Add two-digit numbers to two-digit numbers" PPT courseware for addition and subtraction within 100

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Upload Time: 2024-09-09

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Description

"Add two-digit numbers to two-digit numbers" PPT courseware for addition and subtraction within 100

Oral calculation

6+ 9 = 27 +2 =

65+ 4 = 32 + 60 =

What should you pay attention to when doing addition without carry?

(1) Alignment of the same digits

(2) Add up from ones digit

Thinking: How should I write 6 plus 7 in the ones position ( )?

Write 3 to add one to the tens place

Thinking: 6 plus 4 in the ones position is ( ), how should I write it?

Write 0 to advance to the tens place

Things to pay attention to when writing addition:

Align the same digits.

Add up from ones digit.

If the ones digit reaches ten, advance 1 to the tens digit.

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For more information about the PPT courseware "Addition and Subtraction of Two-Digit Numbers and Two-Digit Numbers within 100", please click the Addition and Subtraction of Two-Digit Numbers and Two-Digit Numbers Within 100 ppt tag.

"Add two-digit numbers to two-digit numbers" Addition and subtraction within 100 PPT courseware 2:

"Two digits plus two digits" Addition and subtraction within 100 PPT courseware 2 Teaching objectives 1. Understand the arithmetic of two digits plus two digits, master the calculation method of two digits plus two digits, and be able to use the vertical form Calculate the addition of two-digit numbers plus two-digit numbers, and use the knowledge you have learned to solve problems in life...

"Two-digit plus two-digit carry addition" PPT courseware for addition and subtraction within 100:

"Two-digit plus two-digit carry addition" Addition and subtraction within 100 PPT courseware teaching objectives 1. Experience the whole process of exploring the calculation method of two-digit plus two-digit carry addition, and understand the carry of two-digit plus two-digit The arithmetic of addition, mastering two-digit addition and two-digit carry..

"Adding two-digit numbers to two-digit numbers orally" Addition and subtraction of two- and three-digit numbers PPT courseware 2:

"Adding two-digit numbers to two-digit numbers" PPT courseware for addition and subtraction of two- and three-digit numbers 2 (1) Do it 53+36= 37+54= 32+46= 15+65= ... ... ... (2) Judgment: Yes The wrong one is 45+28=73( ) 24+23=57..

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Update Time: 2024-09-09

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Addition and subtraction within 100 ppt Add two-digit numbers ppt

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"Add two-digit numbers to two-digit numbers" PPT courseware for addition and subtraction within 100