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Authoritative PPT Summary
"Integers" PPT courseware for addition and subtraction of integers
The formula for the product of numbers or letters is called a monomial.
The numerical factors in a monomial are called the coefficients of the monomial.
The sum of the exponents of all the letters in a monomial is called the degree of the monomial.
fill in the blank
1. 15 times a is _______, and the number 10 less than 2 times x is _______;
2. The reciprocal of a is _______, and the reciprocal of a(a≠0) is _______;
3. It costs x yuan to buy a basketball, y yuan to buy a volleyball, and z yuan to buy a football. A total of ( ) yuan is needed to buy 3 basketballs, 5 volleyballs, and 2 footballs;
4. As shown in the figure, the area of the triangle ruler is _______;
5. Xiao Cong’s home is s kilometers away from the school. Xiao Cong rides to school. If he travels 10 kilometers per hour, it will take _______ hours; if he travels v kilometers per hour, it will take _______ hours;
6. The picture shows the building plan of a residential area. The building area of this residence is ( ) square meters.
Definition: The sum of several monomials is called a polynomial.
In a polynomial, each monomial is called a term of the polynomial.
Terms without letters are called constant terms.
Summary: What new gains and experiences have you gained from studying this lesson?
1. Definition of polynomial: The sum of several monomials is called a polynomial.
In a polynomial, each monomial is called a term of the polynomial. Among them, terms without letters are called constant terms.
In a polynomial, the degree of the term with the highest degree is called the degree of the polynomial.
2. Monomials and polynomials are collectively called integers.
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