"Addition and Subtraction of Integers" PPT Courseware 2

Description

"Addition and Subtraction of Integers" PPT Courseware 2

Knowledge review:

1. The concept of integral formula

2. Monomials, coefficients and degrees of monomials

3.Polynomial, terms of polynomial, degree of polynomial,

Explore

1. What monomials are composed of the following three polynomials?

2. What characteristics do the monomials in each polynomial have in common?

(1)3x²+2x²

(2)3ab²-4ab²

(3)4x²+2x+7+3x-8x²- 2

(1) Similar items

1. Contains the same letters;

2. The exponents of the same letters are also the same; (satisfying such conditions) terms are called similar terms.

When combining similar terms, the result is often a polynomial. This result is usually written in the form of ascending or descending powers of a certain letter:

Ascending power arrangement: Arrange according to the exponent of a certain letter in order from small to large

Descending exponent arrangement: Arrange in descending order according to the exponent of a certain letter

Merger of similar items

①X³-2X²+3X-1-5X+2+2X

②2by +5ax-2ax-5by

③ab-a+b-1.5+4a-2b-0.25-3ab

④-mn+2mn-3mn²+4mn²

The perimeter of a quadrilateral is 48cm, and the first side is acm long, the second side is 3cm longer than twice the first side, and the third side is equal to the sum of the lengths of the first and second sides.

(1) Write the formula expressing the length of the fourth side;

(2) When a=3cm or a=7cm, can we still get a quadrilateral? What is the shape of the graph at this time?

Keywords: courseware for addition and subtraction of integers, PPT courseware for seventh-grade mathematics volume 1 of the New People's Education Press, download of seventh-grade mathematics slide courseware, download of PPT courseware for addition and subtraction of integers, .ppt format

For more information about the PPT courseware "Addition and Subtraction of Integers", please click on the Addition and Subtraction of Integers ppt tab.

"Addition and Subtraction of Integers" PPT courseware 8:

"Addition and Subtraction of Integers" PPT Courseware 8 Activity 1: Xiaohong and Xiaoming each wrote an expression on their own pieces of paper. Xiaohong: 2x-3y Xiaoming: 5x+4y Question: (1) Xiaohong said, find out Their sum. can you help her? (2) Xiao Ming said, find 5x+4y and 2x-3..

"Addition and Subtraction of Integers" PPT Courseware 7:

"Addition and Subtraction of Integers" PPT Courseware 7 The meaning of addition and subtraction of integers is the algebraic operation of finding the sum or difference of several integers 1. Find the sum of the monomials 2x2y3, -4x2y3 and -3x2y3. Solution: 2x2y3+(-4x2y3)+(-3x2y3) = 2x2y3-4x2y3-3x2y3) = -5x2y3 ..

"Addition and Subtraction of Integers" PPT Courseware 6:

"Adding and Subtracting Integers" PPT Courseware 6 Learning Objectives 1. Be able to skillfully and correctly use the rules of merging similar terms and removing parentheses to add and subtract integers. 2. Be able to use the operations of integers to simplify polynomials and evaluate them. 3. In the addition and subtraction operations of integers, comprehend and transform thoughts, and experience...

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Update Time: 2024-11-22

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

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