"Mixed Operations of Addition and Subtraction with Parentheses" PPT courseware download

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"Mixed Operations of Addition and Subtraction with Parentheses" PPT courseware download

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Description

"Mixed Operations of Addition and Subtraction with Parentheses" PPT courseware download, 17 pages in total.

New knowledge exploration

72-(47+16)

Read: 72 minus the sum of 47 and 16.

"( )" are called parentheses.

Parentheses can change the order of operations.

The origin of parentheses:

About 400 years ago, "( )" appeared for the first time in the mathematical operations of the great mathematician Weizhide. "( )" is called parentheses or parentheses. It was first used by the Dutchman Gerard in the 17th century. "( )" is a mathematical operation symbol. If there are parentheses in the calculation, you must first calculate what is inside the parentheses.

Classroom training

32+(55-46)= 86-(13+42)=

summary

What knowledge have you learned in this class?

Mixed operations of addition and subtraction with parentheses

General methods for mixed operations of addition and subtraction:

(1) Count inside the parentheses first;

(2) Then count outside the parentheses.

Keywords: Free download of PPT courseware for mixed operations of addition and subtraction containing parentheses, PPT download of addition and subtraction within 100, .PPT format;

For more information about the PPT courseware "Addition and subtraction within 100, mixed operations of addition and subtraction with parentheses", please click on the PPT tag of Addition and subtraction within 100, mixed operations of addition and subtraction with parentheses.

File Info

Update Time: 2024-09-05

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

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《含有小括号的加减混合运算》PPT课件下载(1)《含有小括号的加减混合运算》PPT课件下载(2)《含有小括号的加减混合运算》PPT课件下载(3)《含有小括号的加减混合运算》PPT课件下载(4)
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