"Numbers represented by letters" Integers and their addition and subtraction PPT

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"Numbers represented by letters" Integers and their addition and subtraction PPT

Part One: Learning Objectives

1. Be familiar with the function keys of the calculator and be able to use them correctly.

2. Be able to use a calculator to perform mixed operations of addition, subtraction, multiplication, division and exponentiation of rational numbers. (Key points)

3. Use a calculator to explore patterns (difficulty)

Letters represent numbers PPT, part 2 content: teaching new lessons

Calculator keystrokes

Commonly used function keys

Use a calculator to calculate

give it a try

Use a calculator to calculate the following questions

Analysis of classic examples

Example 1 Use a calculator to calculate:

Example 2 Use a calculator to calculate and fill in the blanks:

152=________, 252=________, 352=________,

452=________．

(1)What did you find?

(2) Can you directly calculate 852,952 without using a calculator?

Do it

Use a calculator to calculate the following equations and fill in the results on the horizontal line:

999×21=________; 999×22=________;

999×23=________; 999×24=________.

(1)What did you find?

(2) Can you directly write the result of 999×29 without using a calculator? Use a calculator to verify the results you wrote.

Letters represent numbers PPT, part 3 content: Class summary

Use a calculator to calculate

Calculator keystrokes

Use a calculator to calculate

Use a calculator to explore the rules

Keywords: Beijing Normal University edition seventh-grade mathematics PPT courseware free download, letter representation of numbers PPT download, integers and their addition and subtraction PPT download, .PPT format;

For more information about the PPT courseware "Integers and their addition and subtraction of numbers represented by letters", please click on the PPT tab of "Integers and their addition and subtraction of numbers represented by letters PPT".

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Update Time: 2024-10-03

This template belongs to Mathematics courseware Beijing Normal University Edition Seventh Grade Mathematics Volume 1 industry PPT template

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