"Addition and Subtraction of Integers" PPT on Integers and Their Addition and Subtraction (Lesson 1)

Description

"Addition and Subtraction of Integers" PPT on Integers and Their Addition and Subtraction (Lesson 1)

Part One Content: Basic Knowledge Key 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=-4 B.2m+n=2mn

C.2a4+4a2=6a6 D.-2a2b+5a2b=3a2b

5.The result of calculating 3a3-a3 is (C)

A.2 B.2a

C.2a3 D.3a3

PPT on addition and subtraction of integers, part 2: improvement of comprehensive abilities

9.Which of the following formulas is correct to calculate (B)

①a2+a2=a4;②3xy2-2xy2=1;③3ab-2ab=ab;④(-2)3-(-3)2=-17.

A.1 B.2 C.3 D.0

10. If x-y is regarded as a term, then combine 2(x-y)2+3(x-y)+5(y-x)2+3(y-x) to get (A)

A.7(x-y)2

B.-3(x-y)2

C.-3(x+y)2+6(x-y)

D.(y-x)2

11. If -xmy4 and 1/4x3yn are similar terms, then (m-n)4=1.

12. If the monomials 2xm+3y4 and -8x5y3n-1 are similar terms, then the sum of these two monomials is -6x5y4.

Addition and subtraction of integers PPT, the third part: Expansion, exploration and breakthrough

19. There is such a question: "Calculate the value of 3x2-2x+12-x-3x2-8+3x, where x=2019." Xiao Ming mistakenly copied "x=2019" into "x=2091", but his The calculation is also correct. Can you explain what is going on?

Solution: Because 3x2-2x+12-x-3x2-8+3x=(3-3)x2+(-2-1+3)x+12-8=4,

Therefore, the value of the original formula has nothing to do with the value of x, so his calculation result is also correct.

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 3):

"Addition and Subtraction of Integers" PPT on Integers and their Addition and Subtraction (Lesson 3) Part One: Knowledge Points Basic Knowledge Point 1 Addition and Subtraction of Integers 1. Simplify the result of 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 a polynomial is...

"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 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...

File Info

Update Time: 2024-11-03

This template belongs to Mathematics courseware Beijing Normal University Edition Seventh Grade Mathematics Volume 1 industry PPT template

Preview