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★ Summer vacation answers for eight-year-old albums ★
★ Eight-year summer vacation series ★
★ Learning plan for the new semester of mathematics ★
▼ The answer to the math summer homework in the second volume of the eighth grade
( 1)
1.B2.B3.D4.B5.C6.C7.408 parallel 9.a = c>b.
10.13611.The offset angles are equal and the two lines are parallel; 3; 4; Two straight lines are parallel, and the same angle is 12. (1) omitted.
(2) Parallel, the reason is slightly 13. Omit 14. ( 1)∠b+∠D =∠E(2)∠E+∠G =∠b+∞。
(2)
1.C2 B3. D4. D5. D6. c 7.50 or 65.8.49. parallel
10.9 cm or 13 cm11.6012.13, omit 14, omit 15.
16. (1)15 (2) 20 (3) (4) Yes, the reason is omitted.
(3)
1.20 2 . cm 3.84 . 4.85 . 366.37 . D8 . c
9.B 10。 B 1 1。 Omit 12. FG bisects DE vertically, the reason is slightly13.0.5m 14. The reason is omitted 15. ( 1
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▼ eighth grade math summer homework answer book
( 1)
1 . B2 . a3 . C4 . a5 . C6 . B7 . D8 .( 1)& lt； (2)>
(3)≥(4)& lt； (5)& lt； 9.4 10
14.-2，- 1 15. 16 . b & lt； 0
(2)
1.D2 C3 . C4 . C5 . n≤76.238。
9.0 ≤ y ≤ 510.11.x3 (3) has no solution.
13. 1,2 14.34, 16 15.( 1)9≤m & lt； 12(2)9
(3)
1 . C2 . B3 . C4 . 18≤t≤225 . 4 . 0m/s 6.5，7，9
More than 78.2 thousand yuan, 9.22 10.4 people, 13 bottles.
1 1. When the number of tourists is 10 ~ 15, choose travel agency B; When the number of tourists is 16, both travel agencies can choose; When the number of tourists 17 ~ 25, choose travel agency 12. (1)35 yuan and 26 yuan (2) have three schemes; The plan to buy 23 cultural shirts and 27 photo albums is sufficient for buying teachers' souvenirs.
(4)
1.C2。 C3. C4. C5. D6. C7 is any real number; It's 08.a
9.40 The distance from south to west is 80m 10. (6,6), (-6,6), (-6,6), (6,6)11.5 or-1.
12.(5,2) 13.(x，6)(-3≤x≤2) 14。 Omit 15. (-2,0) or (6,0)16.
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▼ Mathematics learning plan for the new semester
The new semester is coming. In order to improve my academic performance in the next semester, I plan the new semester here with excellent and impartial results in all subjects.
First, do a good preview.
Preview is the first link to learn all subjects well, so preview should do:
1, look at the textbook, find out what old knowledge this section is related to, and review this knowledge;
2. Write a summary of this part;
3. Find out the key points and difficulties of this section;
4. Find out the key problems that should be solved in class.
Second, class.
A very important part of learning every subject is to attend classes. Listening to lectures should do the following:
1, with a clear learning purpose;
2. Pay special attention to "understanding" in class.
Third, take class notes.
Taking notes is good for review and homework. Taking notes in class should:
1, keep your notes concise;
2. After taking notes in class, you should also learn to organize your notes in time after class.
Fourth, do your homework.
1. Before you do your homework, you must carefully review what you learned that day, understand its exact meaning, clarify the applicable conditions, and clarify the steps of using it to solve problems;
2. Carefully examine the questions and find out the conditions and requirements of the questions;
3. Clarify the problem-solving ideas and determine the problem-solving steps;
4. Do the questions carefully, don't be sloppy, and check them carefully after you finish;
5. Sum up experiences and lessons in time, accumulate problem-solving skills and improve problem-solving ability;
6. When you encounter a problem that you can't do, don't ask the teacher in a hurry, let alone copy other people's homework. You should review your lessons.
On this basis, through layer-by-layer analysis, step-by-step reasoning, multi-party contact, and sorting out the mess, I made up my mind to finish my homework independently;
7. Subjects that need to be memorized, such as history, geography, biology and politics, should be memorized first and then done.
Fifth, review after class.
1, review in time;
2. Plan review;
3. Use textbooks, notes and teaching AIDS together;
4. Improve the quality of review.
It is not easy to do the above five points well. It needs perseverance, and I am determined to do it.
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2022 eighth grade, Volume II, Math Summer Homework Answers Related Articles:
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