Giải Toán lớp 7 trang 110, 111, 112, 113 tập 2 sách Kết Nối Tri Thức

7th grade math solution page 110, 111, 112, 113 volume 2 book of Knowledge Connection guide to solve exercises 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 in Textbook of year-end review exercises. The children watched together to be able to imagine how to do all kinds of exercises throughout the curriculum, thereby reinforcing their knowledge and being able to solve all the exercises when they encountered them.

See more other good 7th grade Math study materials:
Solve 7th grade math book Connecting knowledge with life
– Solve 7th grade math, page 119, 120 volume 2 of the book Canh Kite – Exercise at the end of chapter 7
– Grade 7 Math Solution, page 96, volume 2, Creative Horizons – Exercise at the end of chapter 9

7th grade math solution page 110, 111, 112, 113 volume 2, book Connecting knowledge with life

Year-end review exercises

NUMBERS AND Algebra

1. Solving Lesson 1 Page 110 Grade 7 Math Textbook

Topic: Calculate the value of the following expressions:
Solution guide:
+ With expressions without brackets, we do it in order:
Powers => Multiplication and division => Addition and subtraction.
+ For expressions with brackets, we do it in the brackets first, outside the brackets after. In case there are many brackets, we do it in the order ( ) => [ ] => { }.
Answer:
7th grade math problem page 110 111 112 113 episode 2 book 2

2. Solve Lesson 2 Page 110 Grade 7 Math Textbook

Topic: Reasonable calculation:
7th grade math problem page 110 111 112 113 episode 2 math book 3
Solution guide:
For expressions without brackets, we do it in order:
Powers => Multiplication and division => Addition and subtraction.
Answer:
7th grade math problem page 110 111 112 113 episode 2 math book 4
7th grade math problem page 110 111 112 113 episode 2 math book 5

3. Solve Lesson 3 Page 110 Grade 7 Math Textbook

7th grade math problem page 110 111 112 113 episode 2 book 6
Solution guide:
a) Apply the rule of conversion and sign change to find x.
b) Calculate |x| then conclude.
c) Estimate the positive number x and then use a calculator to check it again.
Answer:
a) We have:
7th grade math problem page 110 111 112 113 episode 2 book 7 knowledge
7th grade math problem page 110 111 112 113 chapter 2 math book 8
The estimated difference from the computer result is: 3.6 – 3.5 = 0.1.

4. Solve Lesson 4 Page 110 Grade 7 Math Textbook

Topic: Two workers together make a total of 136 products (same time). How many pieces can each worker make, given that the first worker makes one piece in 9 minutes, and the second takes 8 minutes?
Solution guide:
+ Let the number of products the first worker and the second worker can make, respectively, x, y (x, y > 0).
+ Representation of the given data in the form of a formula.
+ Apply the property of the series of equal ratios to find x, y.
Answer:
Let the number of products the first worker and the second worker can make, respectively, x, y (x, y > 0). We have:
Since the working time of the two workers is the same, we have: 9.x = 8.y.
7th grade math problem page 110 111 112 113 episode 2 math book 9
So the first worker can make 64 pieces, the second worker can make 72 pieces.

5. Solving Lesson 5 Page 110 Grade 7 Math Textbook

Topic: Three blocks 6, 7, 8 of a junior high school participated in collecting notebooks for students in disadvantaged areas. Know that the number of books collected by the three blocks is in the order of 8, 7, 6 and that the number of books collected in grade 8 is 80 books less than the number of books collected in grade 6. How many books can each block raise?
Solution guide:
+ Let’s call the number of books three blocks 6, 7, and 8 collected, respectively, x, y, z (x, y, z > 0).
+ Representation of the given data in the form of a formula.
+ Apply the property of the series of equal ratios to find x, y.
Answer:
Let the number of books that are collected in blocks of 6, 7, and 8 be x, y, z, respectively (x, y, z > 0). We have:
x – z = 80.
Since the number of books collected in the three blocks is proportional to 8, 7, 6, we have:
7th grade math problem page 110 111 112 113 episode 2 math book 10
So x = 40. 8 = 320; y = 40. 7 = 280; z = 40. 6 = 240.
So grade 6 can collect 320 books, block 7 can collect 280 books, and grade 8 can collect 240 books.

6. Solving Lesson 6 Page 110 Grade 7 Math Textbook

7th grade math problem page 110 111 112 113 chapter 2 math book 11
a) Determine the highest and free coefficients in each given polynomial.
b) Calculate the value of the polynomial A + B at x = -2.
c) Prove that x = 0, x = -1 and x = 2 are three roots of the polynomial A – B.
d) Multiply A. B in two ways.
e) Find a polynomial R of degree less than 2 such that the difference A – R is divisible by B.
Solution guide:
+ The highest coefficient of the polynomial (non-zero, collapsed) is the coefficient of the highest power.
+ The coefficient of freedom of the polynomial (non-zero, reduced) is the coefficient of the power of 0.
+ x = a is a solution of the polynomial P(x) if P(a) = 0.
+ A – R is divisible by B, then R is the remainder of the division of polynomial A by polynomial B.
Answer:
7th grade math problem page 110 111 112 113 chapter 2 math book 12
7th grade math problem page 110 111 112 113 chapter 2 math book 13
7th grade math problem page 110 111 112 113 episode 2 book 14
7th grade math problem page 110 111 112 113 chapter 2 math book 15

7. Solving Lesson 7 Page 110 Grade 7 Math Textbook

Topic: A rectangular tank is filled with water, then a (solid) cube of side lengths x (dm) is submerged into the tank. Know that the width, length and height of the tank are equal to x + 1, x + 3 and x + 2 respectively (see figure below).
math problem 7 page 110 111 112 113 episode 2 book 16
a) Find the polynomial representing the volume of water remaining in the tank.
b) Determine the degree, highest coefficient and coefficient of freedom of the polynomial in question a.
c) Use the result of question a to calculate the amount of water remaining in the tank (unit: dm3) when x = 7 dm.
Solution guide:
The volume of a rectangular box = length x width x height.
Volume of cube = side x side x side.
Answer:
7th grade math problem page 110 111 112 113 episode 2 book 17
GEOLOGY AND MEASUREMENT

8. Solve Lesson 8 Page 111 Grade 7 Math Textbook

7th grade math problem page 110 111 112 113 episode 2 book of knowledge 18
Solution guide:
a) Prove that two triangles ADM and BDC are congruent according to the side – angle – side case.
b) Indicate the line that intersects AN and BC in the angles forming a pair of staggered internal congruent angles.
c) Use Euclidean axiom to prove.
Answer:
7th grade math problem page 110 111 112 113 episode 2 book 19
7th grade math problem page 110 111 112 113 episode 2 book 20
7th grade math problem page 110 111 112 113 episode 2 book 21
7th grade math problem page 110 111 112 113 episode 2 book number 22
7th grade math problem page 110 111 112 113 episode 2 book number 23
Solution guide:
a) In an isosceles triangle, the median to the base is also the altitude to that base.
b) Prove that two triangles ABM and ACN are congruent according to the side – side – side case.
c) Show AI = IK. From that, deduce IK //MN.
Answer:
7th grade math problem page 110 111 112 113 episode 2 book 24
7th grade math problem page 110 111 112 113 chapter 2 math book 25
7th grade math problem page 110 111 112 113 episode 2 book of knowledge 26
7th grade math problem page 110 111 112 113 chapter 2 math book 27

10. Solving Lesson 10 Page 111 Grade 7 Math Textbook

7th grade math problem page 110 111 112 113 episode 2 book 28
Solution guide:
a) Prove that two triangles ABH and DBH are congruent according to the side – side – side case.
b) Show that EA = ED.
c) Prove that E is the centroid of triangle MBC.
Answer:
7th grade math problem page 110 111 112 113 episode 2 math book 29
7th grade math problem page 110 111 112 113 chapter 2 math book 30
7th grade math problem page 110 111 112 113 chapter 2 math book 31
7th grade math problem page 110 111 112 113 episode 2 book number 32
7th grade math problem page 110 111 112 113 chapter 2 math book 33
STATISTICS AND PROBABILITY

11. Solve Lesson 11 Page 112 Grade 7 Math Textbook

Problem: Binh collects data on the number of high school students in the country from 2015 to 2020 and draws the following chart:
7th grade math problem page 110 111 112 113 episode 2 book number 34
a) Will the number of high school students nationwide from 2015 to 2020 tend to increase or decrease?
b) Make a table of statistics on the number of high school students of the whole country from 2015 to 2020.
c) According to you, which of the data collection methods you have learned, Binh used to get the number?
whether on?
Solution guide: Observe the chart and answer the questions.
Answer:
a) The number of high school students nationwide from 2015 to 2020 tends to increase.
b) Statistical table on the number of high school students of the whole country from 2015 to 2020:
7th grade math problem page 110 111 112 113 chapter 2 math book 35
c) According to you, Binh has collected data from references.

12. Solving Lesson 12 Page 112 Grade 7 Math Textbook

Topic: The following chart shows the total number of world medals won by Vietnamese sports in the years 2015 to 2019:
7th grade math problem page 110 111 112 113 chapter 2 math book 36
a) Make a statistical table on the number of world medals achieved by Vietnamese sports from 2015 to 2019.
b) In the above years, which year did Vietnamese sports win the fewest world medals?
c) The proportion of world medals of Vietnamese sports in 2019 is given in the following chart:
7th grade math problem page 110 111 112 113 chapter 2 math book 37
Calculate the number of each type of world medal won by Vietnamese sports in 2019
Solution guide: Observe the graphs to answer the questions.
Answer:
a) Statistical table of the number of world medals achieved by Vietnamese sports from 2015 to 2019.
7th grade math problem page 110 111 112 113 chapter 2 math book 38
b) In the above years, in 2018 Vietnamese sports won the fewest world medals.
c) The number of gold medals won by Vietnamese sports is:
7th grade math problem page 110 111 112 113 chapter 2 math book 39
The number of bronze medals won by Vietnamese sports is:
238 – 113 – 65 = 60 (medals).

13. Solving Lesson 13 Page 113 Grade 7 Math Textbook

Topic: In the Wheel of Fortune game, the player spins a circular wheel. The wheel is divided into 12 equal fan shapes as shown below. In each fan image is recorded the number of points that the player will receive. There are two fan shapes with 100 points, two fan shapes with 200 points; two fan shapes with 300 points; two fan-shaped 400 points; a fan-shaped score of 500 points; Two fan shapes record 1000 points and one fan image records 2000 points. When the wheel stops, the arrow (fixed at the top) points to which fan image, the player receives the number of points recorded in that fan image.
Mai joins the game and spins once. Calculate the probability that the arrow points to the fan shape:
a) Have a score less than 2000.
b) Have a score less than 100.
c) Have a score greater than 300.
d) Have a score of 2000.
7th grade math problem page 110 111 112 113 chapter 2 math book 40
Solution guide: In a game or experiment, if there are k possible events and there is always only one of these k events, the probability of each event is 1/k.
Answer:
Since the wheel is divided into 12 equal fan shapes, the probability that the arrow will point at each fan shape is the same.
a) There are 11 fan shapes with a score less than 2000. So the probability that the arrow will point to a fan with a score less than 2000 is 11/12.
b) There is no fan on the wheel with a score less than 100, so the event “arrow points to a fan with a score less than 100” is an impossible event. So the probability of the event is 0.
c) There are 4 fan shapes with a score less than 300. So the probability that the arrow will point at a fan with a score less than 300 is 1/3.
d) There is a fan with a score of 2000. So the probability that the arrow will point at a fan with a score of 2000 is 1/12.

https://thuthuat.taimienphi.vn/giai-toan-lop-7-trang-110-111-112-113-tap-2-sach-ket-noi-tri-thuc-72246n.aspx
Above is the solution of 7th grade Math on pages 110, 111, 112, 113 textbooks, books of communication skills, you can review page 102 to be able to firmly grasp the types of exercises and do the exercises easily when you encounter them.
– 7th grade math solution page 102 volume 2 book Connecting Knowledge – Exercise at the end of chapter 10

Bạn thấy bài viết Giải Toán lớp 7 trang 110, 111, 112, 113 tập 2 sách Kết Nối Tri Thức có giải quyết đươc vấn đề bạn tìm hiểu không?, nếu không hãy comment góp ý thêm về Những hình ảnh hài hước về Covid-19 bên dưới để tieuhocchauvanliem.edu.vn có thể chỉnh sửa & cải thiện nội dung tốt hơn cho độc giả nhé! Cám ơn bạn đã ghé thăm Website Trường Châu Văn Liêm

Chuyên mục: Môn Toán Học

Nguồn: Trường Châu Văn Liêm

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