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★ Four-year-old Mathematics Book 2 Summer Homework Answers★
★ Four-year New Term Planning of Primary School ★
★ Four learning methods for primary school students ★
▼ Grade Four Mathematics Book Two Summer Homework Answers
P3 approximate numbers are generally written in thousands, tens of thousands, millions, tens of millions and billions.
P5 The approximate number of a lattice natural number is 500 million, which may be 549,999,999, and the minimum may be 450,000,000.
P9 wheat in the 28th grid has exceeded 654.38+0 billion grains; About 92233720368 million tablets will be put in the 64th box.
P 1 1 Judgments 3 and 4 are wrong, and the rest are correct.
P 15 degree angle: angle 4=60 degrees, angle 5=72 degrees and angle 6=36 degrees.
P 19, drawing, pay attention to draw a vertical line and mark it with rectangular symbols.
P20: The trapezoid has 5 and 6, and the axisymmetric figure is 1, 3, 4, 5.
P23 Fill in 360m2 =0.036 hectare.
Receipt: RMB three thousand eight hundred and sixty-five Yuan only.
P24 Select (3) Select 9.
P3 1 Think about it (1) Choose A and B.
P43 matching formula: 23x4 = 92 28x11= 30817x14 = 238.
P45 formula 209x46 = 9614372x38 =141315x41=12915.
P47 outermost layer of problem solving: (10- 1)x4=36 (basin) * * *10x10 =100 basin.
P50 are 12, 16 and 12 respectively.
P53 14th century, China people.
P55 Problem solving 142-34= 108 (block) 108/2=54 (block) 54/ 18=3 (times)
P56 formula calculation (3) difference: 75- 15=60 Kobayashi is 60/(3- 1)=30 years later: 30- 15= 15 years later.
P58 Fill in one, two (5) and add (5) zeros in the middle of 48 to get 400 0008.
P60 2 The divisor and divisor are simultaneously expanded by the same multiple (except 0), and the quotient remains unchanged.
P6 1 Think about it and fill it out. (3) It takes 2.5 hours to ride a bike, with an average hourly12km.
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▼ New semester plan for the fourth grade of primary school
First of all, I will stick to my previous good study methods, preview carefully before class, listen carefully in class and finish my homework carefully. Strive for this semester's results and go up a storey still higher.
Secondly, I want to get rid of what I did badly last semester, stop fighting with my classmates, get to school on time and take an active part in physical exercise.
Third, get rid of timidity and ask the teacher for advice if you don't understand. Take an active part in social practice, work hard and use more brains to realize the all-round development of morality, intelligence, physique and beauty.
Fourth, strive to read more than two literary masterpieces in the new semester, and plan to open up my own thinking and improve my literary accomplishment for China's Romance of the Three Kingdoms and Russian writer Gorky's Mother.
Fifth, unite and be friendly with classmates, help and care for each other, and avoid quarreling because of a little problem. Actively help students with poor grades and safeguard the collective honor of our class.
Sixth, I should also be modest and prudent, not arrogant and impetuous, and accept the opinions of my classmates and teachers with an open mind. I am full of hope, I will study hard and grow with the arrival of the new semester.
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▼ Four learning methods for primary school students
1, diligent in thinking
"Learning without thinking is useless". In the process of learning, if you don't think actively and just passively accept knowledge, it is not strategic learning and will not achieve good results.
"Diligent thinking" should pay attention to the connection before and after knowledge, and master knowledge through understanding knowledge, rather than rote learning. Psychological research shows that meaning learning is more solid, not easy to forget, and easy to migrate, which can be inferred in future learning. On the contrary, mechanical learning is easy to forget, and you can only cope with the immediate exam, and you will almost forget it after the exam.
2. Questioning spirit
Small doubts lead to small progress, and big doubts lead to big progress. If we just accept knowledge without analyzing it, there will be no progress. Because the essence of learning is the improvement of acquisition ability, not the growth of knowledge. Therefore, we should be good at thinking and encourage ourselves to question, instead of being a "lazy mind" or a "machine" that accepts knowledge. We only know how to swallow dates, but we don't know how to chew and digest.
Step 3 be brave enough to ask questions
Learning, learning itself is inseparable from development. Curiosity is a valuable quality. If we are not curious and never ask questions, people will not grow and society will not develop. Sometimes, parents or teachers will be impatient with your questions, which is their fault, and you are not wrong. Never give up your right behavior because of their wrong behavior. So, you must keep the courage to ask questions!
4. Be good at practicing
Learning is inseparable from practice. As the saying goes, emphasize the importance of practice. If you think it's enough to understand what the teacher said, it's all wet. Knowledge without practice is not solid. When necessary, intensive training should be carried out to improve the proficiency in using knowledge.
It should be emphasized that practice is necessary, but excessive practice is unnecessary. We emphasize "being good at practice", so you should be good at allocating time for practice and know when enough is enough.
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