The answer to the summer homework of mathematics in the second grade of primary school
Page 1:
Three. 1, 18+ 16-9=25 (person) 2,3× 8+9 = 33 (Ben)
3. 10 divided by 5=2 (pieces); 10 divided by 2=5 (person)
Page 2:
2. Right angle: 1, 6 acute angle: 3, 5 obtuse angle: 1, 4.
Third, translate all three vertices of the triangle to the left by 9 squares, and then connect them.
Page 3:
One, two, (3) right angles, (3) acute angles and (1) obtuse angles. 3、3,6,2
2. 1, 18 divided by 3=6 (yuan) 5×6=30 (yuan) 2, (1)63 divided by 9=7.
Page 4:
Second, kilograms, grams, kilograms.
(1)100g (2) 200g (3) 400g
Page 5:
3. 1, 800+200= 1000. 2,35 divided by 5=7. 3、 1500-800=700
Page 6:
First, look at the questions carefully, circle first and then calculate. 18 divided by 6=3 (total divided by each share = number of shares)
Two. 1, ×2, √3, ×4, √.
3, 1, 6×4=24 (pieces) 24+25=49 (pieces) or 6×4+25=49 (pieces)
2.6×3= 18 (block) 18 divided by 2=9 (block) or 6×3 divided by 2=9 (block).
Page 7:
1. 1, 4,6,16,24,42,30,15,40 (continuous subtraction, or sum of two numbers in the total)
2.2×2=4 (before distribution to white rabbits) 4×2=8 (before distribution to lambs)
8×2= 16 (tree)
Page 8:
Second, 1, 12, ③
Three. 1, 4×9=36 (person) 36&; Leather; 6=6 (person) (can also be integrated)
2. 18+ 14=32 (flower) divided by 4=8 (flower) or (18+ 14) divided by 4=8 (flower)
Note: The column synthesis formula must be enclosed in brackets.
Page 9:
2. 1, 30032, 60504, Gao, Qian, 1, do not read.
Three. 1,700+700 = 14002,54 &; Leather; 9=63、 1000- 100=900
Page 10:
First hint: look at the size before queuing.
1、2068、286、2608、2806、2860
2、5550、5505、5500、5055、5005
3,8× 7,6× 6,81divided by 9,40 divided by 5 and 35 divided by 5.
Page 1 1:
3. Note: Students can't investigate statistics at home, so the teacher gives the data, please answer the questions.
The students do the questions according to the data I gave them. From beginning to end: 7, 4, 3, 1 1, 9.
Page 12:
Two. 1, √2, ×3, √4 and √.
Three. 1, 90-(45+25)=20 (piece) or 90-45-25=20 (piece)
2. 12 divided by 4×8=24 (yuan) (it can also be calculated step by step)
Page 13:
Three. 1, √2, √3, ×4, ×
Iv. 1 company ③, 2 company ①, 3 company ②
Page 14
1.1,44+77 =1212. Put any two of the four corners in the middle.
Two, six, nine, 1 23,1,2×6÷4=3 (pieces) 2,52-1+15 = 56 (pieces).
Page 15
I. 1, 32, 23, 24, 35, ②
Page 16
Two. 1, √2, √3, ×4, √.
Four. 1, 45÷9=5 (pieces) (select relevant conditional expression) 2,310-130 =180 (this)
Page 18
Iv. 1, 320+ 170=490 (yuan) 490
Page 19
1. 1, up 2, right 6 or right 6 up 2.
Page 20
4. 1, 120-40=80 (tree) 2, 40÷8=5.
Page 2 1
One, two, sunspot, the last one in the first row, and the third one in the third row of albino stars.
(The movement of the column is 1, 2,3, and the row is 2,3, 1).
2.4+3+2+ 1= 10 angles.
Page 22
Two. 600,800,999, 10000 three. 1, 56÷8=7 2, 85-60+65=90 (pieces)
3,5× 2+5 =15 (piece)
Page 23
One, five, 10, two, five three, 600, 300, 700, 270, 600, 220.
4.3 1, 2×3=6 (film) 18÷6=3 (days)
Page 25
4, 1, 8÷4=2
Page 26
2, 137, 146, 155 3, 18 (plus 1, 2, 3, 4, 5 ...)
4,31(Law of 2,4,6,8, 10, 12)
Three, 1, 9 ÷ 9 = 1 2,690-390 = 300 four,1,3,4.
Page 27
Two, two, two, two, three, 1, 48÷8=6 (platoon) 2, 28+36-40= 14 (head)
3,3× 6-9 = 9 (branch)
Page 28
1. 1, 22, 22. No one is right. Sheep can pay 100 yuan to wolves.
Page 29
Second, 1, the law of shifting the tail of the first picture. 2. The last rule to move to the front.
3. Right turn law.
Page 30
Three, 1, 32, 33, 24, 25, ①
① Four, 40-3×8= 16 (each)
Study plan for summer vacation of sophomore year.
First of all, the timetable
1, four "1 hour guarantees" per day.
Make sure to do Chinese or math winter vacation homework for one hour every day;
Guarantee one hour of free extracurricular reading every day;
Ensure one hour of English self-study every day;
Ensure an hour of outdoor activities or sports every day.
2. Planned and unplanned
Without special circumstances, the above plan must be completed every day;
The daily plan can be arranged flexibly and freely under the premise of "guarantee";
If there are unexpected arrangements such as traveling abroad or returning home for vacation, it may not be implemented temporarily;
You can sleep in occasionally, but don't affect the implementation of the day's plan.
Second, the study plan
1, complete related courses independently without taking part in Chinese and math training, without having a tutor.
2. Chinese curriculum plan
Finish the summer homework in July, check and correct it before mid-August, and check for leaks and vacancies;
Read your own book collection system again (focus on reading history, encyclopedia knowledge, comics, Chinese and foreign classics and other series;
You can buy three books you like during the holiday;
Review the standardized answers and typos of the weak reading questions before.
3. Mathematics curriculum plan
Finish the summer homework in July, check and correct it before mid-August, and check for leaks and vacancies;
During the holiday, I completed the self-study of the fifth-grade "Olympic Mathematics Improvement Class", basically mastered its essentials, and selectively selected typical topics to do.
Pay attention to the correction of careful calculation.
4. English curriculum plan
English learning ability and grades are average, so we should focus on strengthening the cultivation of learning interest and ability;
Review the school textbook system of grade three and four, and listen to Cambridge English tapes every day, unlimited time;
During the holiday, write down all the English words you remember before in a small notebook and summarize them in categories;
If you are interested and have the opportunity, you can contact and consolidate the pronunciation and phonetic symbols to ensure the pronunciation standard as much as possible.
Daily schedule of summer vacation
8:00——8; Get up at 30 (brush your teeth, wash your face, eat)
Do the homework assigned by the teacher from 8: 30 to 9: 00
Do your homework at 9:00- 10:00.
Play at 10: 00- 13: 00.
/kloc-do your homework at 0/3: 00-14: 00.
Play at 14: 00- 15: 00.
/kloc-do your homework at 0/5: 00-16: 00.
16: 00-210: 00 to play.
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