Second grade math summer homework reference answer.
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)
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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.
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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.
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Second, kilograms, grams, kilograms. (1)100g (2) 200g (3) 400g
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3. 1, 800+200= 1000. 2,35 divided by 5=7. 3、 1500-800=700
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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).
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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)
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Second, 1, 1 2,33,1,4×9=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.
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2. 1, 30032, 60504, Gao, Qian, 1, do not read.
Three. 1,700+700 = 14002,54 &; Leather; 9=63、 1000- 100=900
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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.
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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.
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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)
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Three. 1, √2, √3, ×4, ×
Iv. 1 company ③, 2 company ①, 3 company ②
Summer vacation schedule for primary school students
6: 50: Get up and read a poem.
7: 20: Wash your face, brush your teeth and have breakfast.
8: 00-8: 30: Finish summer homework.
12 o'clock-1 o'clock: nap
7:00-7:30 pm: read for half an hour.
8: 30 pm: Go to bed on time.
1. Help your family do a housework every day.
Second, watch TV no more than 1 hour every day.
Three, fixed two days a week, free to arrange time. But I have to communicate with my parents at night.
Fourth, visit once a week. According to the performance, mom and dad decided to reward or punish.
Food safety precautions for students in summer vacation
1, when buying food, pay attention to whether the food packaging has the manufacturer, the production date, whether the shelf life has passed, whether the food raw materials and nutritional components are marked, and whether there is a QS logo. Don't buy three-no food.
2. Don't buy lunch boxes or food from unlicensed vendors to reduce the hidden dangers of food poisoning.
3. Pay attention to personal hygiene, wash your hands before and after meals, and develop good hygiene habits.
4. Tableware should be washed and disinfected. Don't put food in unclean containers, and don't litter to prevent mosquitoes and flies from breeding.
5. Eat more fruits and vegetables; Eat less snacks, fried and smoked food.
6. Drinking a proper amount of water every day is good for your health, and boiled water is drinking water. Drink more boiled water and less sweet drinks.
7. Eat slowly, don't gobble, don't laugh and play.
8. Wash raw fruits and vegetables. Peel as many fruits and vegetables as possible.
9, three meals a day should be reasonable, the diet should be moderate, and eat regularly. Not picky about food, not partial eclipse, not overeating.
10, puffed food such as potato chips and ice cream. It is a food with high fat, high calorie and low crude fiber and cannot be eaten often.
1 1, don't be greedy for cold drinks. Eating more cold drinks will make the temperature of digestive tract plummet, leading to gastrointestinal dysfunction and inhibiting gastric acid secretion.
12, don't eat or drink water after strenuous exercise.
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