| Category | Format | Size |
|---|---|---|
| People's Education Press Eighth Grade Mathematics Volume 1 | pptx | 6 MB |
"Multiplication of Integers" Multiplication, division and factorization of integers PPT courseware
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"Multiplication of Integers" Multiplication, division and factorization of integers PPT courseware
question:
Three chain stores sell a certain product at the same price m (unit: yuan/bottle). Their sales volume (unit: bottle) within a month are a, b, and c respectively. Can you use a different method to calculate their total revenue from selling this item during the month?
Solution (1): First find the total sales of the three chain stores, and then find the total revenue, that is, the total revenue (unit: yuan) is: m(a+b+c)①
Solution (2): First find the income of the three chain stores separately, and then find their sum, that is, the total income (unit: yuan) is: ma+mb+mc②
Since ① and ② represent the same quantity, so: m(a+b+c)=ma+mb+mc
Distributive law of multiplication: (a+b)c=ac+bc
It can be seen from the multiplication formula: m(a+b+c)=ma+mb+mc
How to multiply monomials and polynomials:
Multiplying a monomial by a polynomial means multiplying each term of the polynomial by the monomial and then adding the resulting products.
Consolidation exercises:
1. Calculation: (1)3a(5a-2b) (2)(x-3y)·(-6x)
Solution (1)３a(5a-2b)
=3a · 5a+3a · (-2b)
=15a-6ab
(2) (x-3y)·(-6x)
=x ·(-6x)+(-3y) ·(-6x)
=-6x+18xy
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For more information about the PPT courseware "Multiplication of Integers, Multiplication, Division and Factorization of Integers", please click the Multiplication of Integers ppt Multiplication, Division and Factorization of Integers ppt tag.
"Multiplication of Integers" PPT courseware:
"Multiplication of Integers" PPT Courseware Part One: Review and Thinking The basis for multiplying a monomial by a polynomial is the distributive law of multiplication to addition; how to perform multiplication operations of monomials and polynomials? ① Multiply each term of the polynomial by a monomial. ② Then...
"Multiplication of Integers" PPT:
"Multiplication of Integers" PPT Part One: Review Introduction: 1. Multiplication of powers with the same base: am.an=am+n (m,n are both integers) 2. Power of powers: (am)n=amn ( m, n are both positive integers) 3. The power of the product: (ab)n=an.bn (n is a positive integer) ....
"Multiplication of Integers" Operations of Integers PPT Courseware 3:
"Multiplication of Integers" Operations of Integers PPT courseware 3 Teaching target knowledge and ability 1. Multiplication rules of integers; 2. Multiplication of monomials and polynomials; 3. Multiplication of polynomials and polynomials. Process and method 1. Experience and explore the multiplication of integers The process of operational properties..
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Update Time: 2024-06-30
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