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Category | Format | Size |
---|---|---|
Beijing Normal University Edition Seventh Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Addition and Subtraction of Integer Formulas" PPT on Integral Formulas and Their Addition and Subtraction (Lesson 3)
Part One Content: Basic Knowledge Key Points
Knowledge point 1: Addition and subtraction of integers
1. The result of simplifying 7(x+y)-5(x+y) is (A)
A.2x+2y B.2x+y
C.x+2y D.2x-2y
2. It is known that the sum of a polynomial and 3x2+9x is equal to 5x2+4x-1, then this polynomial is (D)
A.8x2+13x-1 B.-2x2+5x+1
C.8x2-5x+1 D.2x2-5x-1
3. It is known that A=x2-2xy, B=y2+3xy, then simplify 2A-3B= 2x2-13xy-3y2.
PPT on addition and subtraction of integers, part 2: improvement of comprehensive abilities
7. If A is a fifth-order polynomial and B is a fourth-order polynomial, then A+B must be (C)
A. A polynomial of degree no less than nine
B. Fourth degree polynomial
C. quintic integer
D. The number of times is variable
8. It is known that the positions of the rational numbers a and b on the number axis are as shown in the figure, then the result of simplifying the algebraic formula |a+b|-|a-b| is (C)
A.-b B.a C.-2b D.2a-b
9. The sum of polynomial x3-2x2+5x+3 and polynomial 2x2-x3+4+9x must be (D)
A. Odd number B. Even number
C. Multiples of 2 and 7 D. None of the above are correct
10. It is known that P=3ax-8x+1, Q=x-2ax-3, no matter what value x takes, 3P-2Q=9 is always true, then the value of a is (D)
A.-3 B.-2 C.0 D.2
11. Xiaobai is a sloppy kid. When he calculated the subtraction of 3a2+7b from an integer, he regarded the subtraction as addition. The result was -2a+1, so the correct result should be 6a2+2a+14b-1.
Addition and subtraction of integers PPT, the third part: Expansion, exploration and breakthrough
13. It is known that A=2x2+3xy-2x-1, B=-x2+xy-1.
(1) Find the value of A+2B;
(2) If the value of A+2B has nothing to do with x, find the value of y.
Keywords: Free download of Beijing Normal University Edition seventh-grade mathematics PPT courseware for the first volume, PPT download of addition and subtraction of integers, PPT download of addition and subtraction of integers, .PPT format;
For more information about the PPT courseware "Integers and their addition and subtraction of integers", please click the Integers and their addition and subtraction PPT Addition and subtraction of integers PPT tab.
"Addition and Subtraction of Integer Formulas" PPT on Integral Formulas and Their Addition and Subtraction (Lesson 2):
"Addition and Subtraction of Integers" Integers and their addition and subtraction PPT (Lesson 2) Part 1 content: Knowledge points Basic knowledge point 1 Rule of bracket removal 1.-(a+b-c)The result after deformation is (A) A.-a -b+c B.-a+b-c C.a-b+c D.-a-b-c 2. The following transformations are incorrect..
"Addition and Subtraction of Integer Formulas" Integer formulas and their addition and subtraction PPT (Lesson 1):
"Addition and Subtraction of Integers" PPT on Integers and their Addition and Subtraction (Lesson 1) Part One: Basic Knowledge Points 2. If -x3ym and 2yx3 are similar terms, then the value of m is (B) A.-1 B.1 C .2 D.3 Knowledge Point 2 Merge similar items 4. Which of the following calculations is correct (D) A.b-5b..
"Addition and Subtraction of Integers" PPT (Lesson 3):
"Addition and Subtraction of Integers" PPT (Lesson 3) Part One Content: Learning Objectives 1. Be proficient in the addition and subtraction of integers. (Key Points) 2. Be able to list formulas according to the meaning of the question to express the quantitative relationship in the problem. ( Difficulty) ... ... ... Addition and subtraction of integers PPT, Part 2...
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Update Time: 2024-11-04
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