Chickens and rabbits live in the same cage. * * * There are 48 heads, 132 feet. How many chickens and rabbits are there?
3. A feeding group * * * has 78 chickens and rabbits and * * * has 200 feet. How many chickens and rabbits are there in the feeding group?
There are countless chickens and rabbits in the same cage, and 36 heads are exposed in the cage. Count 50 feet. How many chickens and rabbits are there in each one?
5. Xiaoming bought 35 20-cent and 50-cent stamps with 10 yuan. How many stamps did he buy under these two names?
6. Xiaohong bought 20 stamps with 50 cents and 80 cents at 60 cents 13 yuan. How many stamps did she buy each?
7. Xiaogang has 70 quarters in his piggy bank. Xiao Gang counted that a * * * coin has 194 cents. How many coins are there?
8. In three years, 30 students in one class donated 205 yuan to the Beijing Olympic Games, and each student donated 5 yuan, namely 10 yuan. Do you know how many students donated 5 yuan and 10 yuan respectively?
9. Forty-five students from Class Two in three years donated 100 yuan to the Love Foundation, of which 1 1 each student donated 1 yuan, and each of the other students donated to 2 yuan or 5 yuan. How many students asked for donations from 2 yuan and 5 yuan?
10. Mother squirrel can pick 20 pine nuts every day in sunny days, and only 12 in rainy days. She has picked 1 12 pine nuts for 8 consecutive days. How many sunny and rainy days are there in these eight days?
1 1. A group of students from a school participated in the math competition, with an average score of 63 and a total score of 3 150. Among them, the average score of boys is 60 and that of girls is 70. How many men and women want to take part in the competition?
12. A math contest has 20 questions * * *. Get one question right, 5 points, get one wrong, 3 points, and Dong Liu 52 points. Do you know how many questions Dong Liu got right?
13. A math contest has 20 questions * * *. 8 points for doing a right question and 4 points for doing a wrong question. Dong Liu scored 1 12. Do you know how many questions Dong Liu got right?
14.52 students rowed and took one * * ride 1 1 boat, including 6 people in the big boat and 4 people in the small boat. How many big boats and small boats are there?
15. In a parking lot, 32 cars and motorcycles are parked. These cars have 108 wheels. How many cars and motorcycles are there?
16. The PLA went camping for training. Walk 35 kilometers a day in sunny days and 28 kilometers a day in rainy days. 1 1 Walk 350 kilometers a day. How many days are sunny during this period?
17. 100 The monk ate 100 cakes, three big monks ate 1, and three little monks ate 1. How many monks are there?
18. There are three kinds of animals *** 18, and * * has 1 18 legs and 20 pairs of wings. How many dragonflies are there? Spiders have eight legs; Dragonflies have six legs and two pairs of wings; Cicada has six legs and a pair of wings.
19. A team of robbers and a team of dogs, the second team goes together as a team, which counts as a * * * 360 head and a * * * 809 legs. How many robbers and dogs are there?
answer
1. Chicken: 16, Rabbit: 14.
2. Chicken: 30, rabbit: 18.
3. Chickens: 56, rabbits: 22
4. Chicken: 22, rabbit: 14.
5.20 points for 25 stamps and 50 points for 10 stamps.
8 stamps 6.50 points, 12 stamps 80 points.
There are 52 nickels and 18 nickels.
8. Students who donated money to 5 yuan have 19, and students who donated money to 10 have 10.
9. Twenty-seven people donated 2 yuan and seven people donated 5 yuan.
10.2 sunny days and 6 rainy days.
1 1. There are 15 girls, and 35 boys want to participate.
12. Dong Liu got it right 14.
13. Dong Liu got it right 16.
14. There are 4 big boats and 7 small boats.
15. 22 cars and 0 motorcycles 10.
16. There are 6 sunny days.
17. There are 25 big monks and 75 small monks.
18.5 spider; 7 dragonfly; Six cicadas.
19. There are 275 robbers and 85 dogs.