Western Normal University Edition First Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 1
People's Education Press Second Grade Mathematics Volume 1
People's Education Press Third Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
Beijing Normal University Edition Eighth Grade Mathematics Volume 1
People's Education High School Mathematics Edition B Compulsory Course 2
Hebei Education Edition Seventh Grade Mathematics Volume 2
Hebei Education Edition Fourth Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
Qingdao Edition Seventh Grade Mathematics Volume 2
People's Education Press First Grade Mathematics Volume 2
Category | Format | Size |
---|---|---|
Qingdao Edition Seventh Grade Mathematics Volume 2 | pptx | 6 MB |
Description
"Multiplication of Monomials" PPT Courseware 2
An algebraic expression composed of numbers and letters or letters and letters multiplied is called a monomial.
Practice before class
1. (oral answer) calculation:
(1) a5 •a5= a10
(2)(a5)5= a25
(3) a5 +a5= 2a5
(4)(ab)5= a5b5
(5)(-2a2b)3= -8a6b3
Q&A
(1) If Xiao Ming’s step length is represented by a meter, can you express the area of the square using an algebraic expression containing a?
(1100a) (625a)
(2) Assuming that Xiao Ming’s step length is 0.8 meters, what is the approximate area of the square in square meters?
When a=0.8
(1100a) . (625a)
=(1100×0.8)×(625×0.8)
=440000m2
(3) In order to simplify the calculation, we can simplify it first and then substitute it into the evaluation.
Can you describe the rules for multiplying monomials by monomials?
Rule: When multiplying a monomial by a monomial, multiply their coefficients and powers with the same base, leaving the remaining letters and their exponents unchanged as factors of the product.
True or false:
Multiplication of powers with the same base, the base remains unchanged, and the exponents are added
(1) 4a2 •2a4 = 8a8 ( )
(2) 6a3 •5a2=11a5 ( )
(3)(-7a)•(-3a3) =-21a4 ( )
(4)3a2b •4a3=12a5 ( )
Points to note when multiplying monomials
When calculating the product of coefficients, pay attention to the sign;
Multiplication of factors with the same letters is multiplication of powers with the same base. The base remains unchanged and the exponents are added;
Letters contained only in a monomial must be written in the product together with its exponent to prevent omission;
The result of multiplying a monomial by a monomial is still a monomial, and the coefficient must be written in front of the letter factor;
The same rules for multiplication of monomials apply to the multiplication of three or more monomials.
Class summary
knowledge gain
Rules for multiplying monomials by monomials
Rules for multiplying monomials and polynomials
Thought method harvest
overall thought
Transform thoughts
Application harvest
Mathematics is everywhere in life
Keywords: Teaching courseware for multiplication of monomials, Qingdao edition seventh grade mathematics volume 2 PPT courseware download, seventh grade mathematics slide courseware download, multiplication of monomials PPT courseware download, .PPT format;
For more information about the "Multiplication of Monomials" PPT courseware, please click the Multiplication of Monomials ppt tab.
"Multiplication of Monomials" PPT courseware 3:
"Multiplication of Monomials" PPT courseware 3 Review of old knowledge 1. am an=am+n (m, n are positive integers) Multiply the powers with the same base, the base remains unchanged, and the exponents are added. 2. (am) n=amn (m, n) is a positive integer) raised to the power, the base remains unchanged, and the exponents are multiplied. 3. (ab)..
"Multiplication of Monomials" PPT courseware:
"Multiplication of Monomials" PPT courseware Think about it 1. How to multiply monomials? Coefficients of a monomial? Powers of the same letter? Letters contained only in a monomial? (Coefficient) (Multiplication of powers with the same letter) Individual powers Multiply monomials, ..
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Update Time: 2024-10-18
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