2017 Primary School Summer Homework Answers 2017 People's Education Edition Primary School Summer Homework Answers Summary

Answers to the 2017 elementary school summer homework. The summer vacation is already halfway through. Have you finished your summer homework? Today, I will introduce to you the answers to the math homework for the 2017 summer homework. When parents check their children's homework, they can check it carefully by comparing the answers.

Answers to 2017 Primary School Summer Homework

Answers to Grade 8 Summer Math Homework

1-8, dabdddca;9, 1,2,3;10, a≤b;11, a<4 and a≠0;12, a>-1;13, 7;

14. (1) x < 2, (2) x < -3; 15. a ≤ ; 16. 1; 17. 18 cm; 18. 21

21. Question 18; 22. (1) a=0.6, b=0.4; (2) between 35% and 50% (excluding 35% and 50%).

1:d 2:a 3:a 4::a 5:c 6:c

7: -2 8: 1, 9: x = 2, 10: x. ≥ 0 and x ≠ 1, 11, omitted, 12, omitted, 13, 2-a, 14, a-3, 1, 15, (1) x = 4, (2) x = -2/3, 16, b, 17, c, 18, 2, 19, -1, 20, k = 1, 4, 7, 21, opposite numbers, 22, 47, 23, 375, 24, omitted,

1, -1 2, y = 2/x 3, b 4, d 5, b 6, c 7, b 8, 1/2 9, 2∏ 10, b 11, (1) y = 4-x (2) Omitted 12, (1) x = 1 m = 1 (2) Intersection with x axis (-1, 0), Intersection with y axis (0, 1) 13, x 0) (2) 3000 (3) 6000

(IV) 1. b; 2. b; 3. b; 4. a; 5. b; 6. b; 7. d; 8. d; 9. ≠5; = —1; 10. t ≤ —1; 11. —6; 12. Decrease; 13. a — 3; 14. 3 and 4; 15. 19; 16. 3 or 4/3; 17. x ≥ 1; 18. x < 1; 19. x — 3, original formula = -; 20. Omit; 21. x = 4; 22. y = -x + 2, 6; 23. Omit, bd = 6

(V) 1.4:3 2.6 3.3858 4.18 5.1:9 6.18 7.①④ 8.∠a=∠d

9.(-2,-3) 10.2 11.b 12.d 13.c 14.a 15.a 16.c 17. slightly 18.14.4cm

19. Omit 20.5.2 21. Or 22.5 23.6.4

(six)

1-8: cccbbabc 9:1.6,26;10:8.75;11: ∠a=∠a, ∠afe=∠b, ∠aef=∠c,

12:7;13:6.4;14:8:5;15:48;16:6, 4.8, 8.64;

17: 9:4; 18: 1:3; 19: 4 20: 13, ; 21: 8.3

(seven)

1. c 2. a 3. d 4. c 5. b 6. b 7. b 8. d 9. If there are two equal angles in a triangle, then the triangle is a right triangle. 10. 75° 11. 70° 12. Omitted 13. Two triangles have two sides and one angle that are equal. The two triangles are congruent. False 14. Omitted 15. Omitted 16. Omitted 17. Omitted 18. 2 pairs Omitted 19. Equal 20. 90° 108° 21. Omitted 22. Omitted

(eight)

1.d 2.a 3.d 4.b 5.d 6.b 7.1/6 8.1/20 9.1/3 10.0.4 11.1/6 12.1/2

13. (1) Hearts K, Spades K, Diamonds K, Clubs K (2) 1/52 (3) 1/13 (4) 1/4 (5) Unfair

14.(1) 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 14 in total

(2)7/50 15.(1)1/9 (2)2/3

16.b 17.c 18.1/10 19.5 20.9/20 21.(1)1/2 (2)1/3

22. (1) omitted (2) 1/3 (3) There are 5 type a calculators

(Nine)

1.b. 2.a. 3.c 4.b 5.b 6.d 7. 8.0 9.1500/x-1500/(x+50)=5 11.Omitted 12.7.5 13.15 14. A triangle with two sides of equal height is an isosceles triangle. 15.2-a 16.4 17.(1)(a,0.5a+1) (2)(-4,-1) 18.Omitted 19. (1)Omitted (2)0.5 20. (1)Omitted (2)0.75 21. (1)y=2x+50 (2)660 (3)1518

(ten)

1 2 3 4 5 6 7 8

d d c d d a d b

9. x>3, 10. x≠-1, 11. y=-6/x, 12. 0.5, 13. 2, 14. Parallelogram, 15. -2

(eleven)

I. Multiple choice questions 1~10 cdbdabdcca; II. Fill in the blanks 11. 0.3 ; 12.x≥0 and x≠9 13.-m 14.x≥1 15.< 16.4y ; 18 17.3 18. Equal 19.1 20.

Three problem solving questions 21 (1) x ≥ (2) a ≤ (3) m takes all numbers (4) x < 0 22 Simplify (1) 156 (2) -5

(3) (4) 23(1) (2) (3) (4) (5)

(6) 24 x≥ and x≠1 25. -1 26.(1) (2)

Answers to Zhejiang Education Edition Mathematics Homework

math

Page 27 of Double-base Navigation: I. Fill in the blanks Question 1: Mode Question 2: √S2 Standard deviation Dispersion Question 3: B

Question 4: 8844 Question 5: 31 ;46.5 Question 6: 2 Question 7: -1 Question 8: (1) mn (2) ab

(3) 3xy-3y2 Question 9: 3; 3 Question 10: 1 Question 11: Two lines are parallel; their bisectors of corresponding angles are parallel.

;True 2. Multiple choice questions 1~6 DDCBBD 3. The step that may produce root growth is D

IV. Calculate and simplify (note: / is the fraction line between the numerator and denominator) Question 1: Original formula = (15y-12x+6x)/12x2y2=(15y-6x)/12x2y2 Question 2: Original formula = (x+2)/(x+2)(x-2)—x/(x-2)

=(x+2-x)/(x-2)=2/(x-2) 5. Solve the equation 3(x-1)/x(x-1)=(x+5)/x(x-1)

3x-3+6x=x+5 8x=8 x=1 Verification: Substituting x=1 into the original equation will result in an increasing root ∴ the original equation has no solution

VI. (1) From top to bottom: 13.2; 13.4 (2) Xiaoming got the best result the second time; Xiaoliang got the best result the fourth time

(3) Their means are both 13.3; Xiao Ming’s range is 0.2; Xiao Liang’s range is 0.4; Xiao Ming’s variance is 0.004

Xiaoliang's variance is 0.02 Suggestions: Xiaoming's grades are relatively stable and he should make further progress; Xiaoliang's grades are unstable and he should make more progress.

Exercise to find the reason 7. (1) ① Parallelogram ② (I really can't figure out how to draw it, I'm sorry) with CB

Draw △CBD′ as the axis of symmetry, symmetrical to △CBD. (2) Find the midpoint D of AC. Draw DE‖CB and let EB⊥CB.

Then we draw a rectangle DCBE. VIII. (1) Construct NH‖BC through point N and intersect AE at G. Then ∠MHN=∠C=90°=∠B

∠NGO+∠ONG=90° ∠NAO+∠OGN=90° ∴∠NGO=∠NAO Again ∵∠MHN=∠B NH=BC=AB

∴△ABE≌△MNH ∴AE=MN=10㎝ (2)∵∠A=40° AB=AC ∴∠ABC+∠C=140°

∠ABC=∠C=70° ∵AE=EB ∠AED=∠BED ED=ED ∴△AED≌△BED

∠EBD=∠A=40°∠DBC=70°—40°=30° ∠BDC=180°—70°—30°=80°

70°≠30°≠80°, that is, BC≠DC≠BD, so △BCD is not an isosceles triangle.

How to supervise children to do homework

When urging children to do their homework, you should pay attention to the wording and attitude when communicating with them, explain the reason clearly, and avoid getting angry at will or labeling your children!

Mistake 1: “Write quickly, don’t dawdle!”

This is probably the most common thing parents say to their children. As soon as their children start doing homework, parents will be alert. If they find that their children are distracted at all, they will immediately urge them to "write quickly, don't dawdle."

In fact, you can tell your child: "Doing homework is your own business, and you have to judge the degree yourself. If you can't complete today's homework today, then your study plan for tomorrow will increase." Through such guidance, children can also realize that they have the responsibility to bear the consequences of their own actions.

Mistake 2: “Have you finished your homework?”

The question "Have you finished your homework?" is like pouring cold water on a child. "You only care about homework all day long. Is it your child's homework or mine?!" This will create a false impression in the child's mind that "Mom loves my grades more." As a result, children who feel that they have lost their parents' love will become rebellious, talk back, and hate studying.

Mistake 3: "Just watching TV and doing homework."

When parents say this, they usually turn off the TV angrily. When children face such rude behavior, they usually feel a little disgusted, "It's just watching TV for a while, what's the big deal?"

In fact, parents don’t need to lose their temper because their children watch TV. Instead, they can calmly and seriously tell their children: “If you don’t do your homework, you may not be able to finish it. Can you watch for another 10 minutes and then do your homework?” In this case, children usually feel that 10 minutes is enough. When the time is up, they will take the initiative to leave the TV and do their homework seriously.