2. There is an old mother. She has three boys, and each boy has a sister. How many people are there in this family?
Xiaoming gave Xiaogang two pencils, the number of which is the same. How many pencils does Xiaoming have than Xiaogang?
4. Xiao Gong's Xiangqian Che runs. The conductor counted the number of people on the bus and said that there were twice as many people who didn't buy tickets as those who did. Do you know at least how many passengers bought tickets on the bus?
As we all know, generally speaking, the sum of several numbers is less than their product, for example, 2+3+4 is less than 2×3×4. Then please answer: Is the sum of 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 greater than the product of multiplication?
6. The sum of two numbers is greater than one number 17 and greater than the other number 15. Do you know what these two numbers are? Do you think of general relations from this?
7. Xiaoming and Xiaoying go to buy books together. Xiaoming bought a composition book and Xiaoying bought a math book. As we all know, Xiaoying bought twice as many math books as Xiaoming did. I also know that the price of composition books is twice that of math books. Which of them spends more money?
8. When school was over at noon, it was still raining, and everyone was looking forward to sunny days. Xiaoming said to Xiaoying, "It has been raining for three days. Do you think it will be sunny in 36 hours? " What do you say, little friend?
9. On an extracurricular group activity day, the teacher walked into the classroom and saw that only half of the students came to participate in the activity. The teacher was very angry. Do you know how many students came today?
10, Kobayashi and Xiaorong each have 10 yuan in their pockets. They go to the bookstore to buy books. After buying the books, they found that Xiao Lin spent as much money as Xiao Rong left. Excuse me, how much money do they have now
1 1, full of a glass of milk, Xiao Ming drank half a cup first; Then fill it with water and drink half a cup; Fill it up again and drink it all at last. How many glasses of milk and water did little Yi Ming drink?
Huang Xiao and Xiao Lan want to buy the same book. Xiao Huang is short of a penny and Xiaolan is short of 42 cents. If they buy the book together, the money is still not enough. What's the price of this book? How much money do they each have?
13, a cricket has 6 legs and a spider has 8 legs. There are *** 10 crickets and spiders, * * * has 68 legs. How many crickets and spiders are there?
14. A bicycle has two wheels and a tricycle has three wheels. There are 10 bicycles and tricycles in the carport, with 26 wheels. How many bicycles and tricycles are there?
15. A chicken has a head and two feet, and a rabbit has a head and four feet. If a chicken and a rabbit in a cage have a head of 10 and 26 feet, do you know how many chickens and rabbits are in the cage?
16, Xiao Hu is a member of the fun math group. Someone asked Xiao Hu how old he is this year. He made up an interesting math problem and replied, "Grandpa, Dad and I, the sum of their ages is 120 years old. Grandpa is 30 years older than dad, and the sum of their ages is just older than me 100 years old. Guess how old I am? " Please guess how old Tiger, Dad and Grandpa are.
17. My brother is 8 years old and my brother 14 years old. How old are they when the sum of their ages is 48?
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1. Students should plant colorful flags on one side of the road. Eight colorful flags were planted from one side of the road to the other. The distance between every two adjacent colored flags is 4 meters. How long is this horse path?
2. How many times does it take to cut a wire into 10 segments? If it takes 3 minutes to cut each time, how many minutes does it take to cut this line?
For a six-story building, it took Xiaoming 45 seconds to run from the ground floor to the sixth floor. How many seconds does it take per floor on average?
4. There are 1 1 boys in one line. The teacher asked 1 girl to be inserted between every two boys. How many girls can you insert?
It takes 5 minutes for a cat to eat a mouse. There are five cats now. How long does it take to eat a mouse of the same size at the same speed?
6. Xiaoming attended a classmate party. When he arrived, he saw 10 students drinking tea. How many students were there at that time?
7. In a box, eight red socks and six white socks are piled up in a mess. Now you reach into the box and touch it. Think about it. At least a few can guarantee the same color.
8. There are 18 birds in two trees, and five birds fly from 1 tree to the second tree. How many birds are there in two trees now?
9. Go home at night, pull the switch and the light will come on. I can pull the switch naughty six times. Do you think the light in the room is on? What if they switch it on and off seven times? Pull the switch 15 times? Pull the switch 46 times? Pull the switch 100 times?
10, there is a shuttle bus between the east stations, and you can call one from the east station to the west station. Please answer the following questions:
(1) If the bus * * * was originally at the East Station, and after a few trips back and forth, it drove to the East Station, then did the bus run odd or even times?
(2) If the bus * * * was originally at the East Station and made 9 1 round trip, did the bus arrive at the East Station or the West Station?