9. How many 9s are there from 1 to 100?
20 digits have 10 digits, 10 digits have 10 digits-only 19 digits, and the number 99 is repeated.
10, Xiaohua's father can cut off five of his own nails in 1 minute. How many nails can he cut in five minutes? -10 If the hand is counted alone, 20 if the foot is counted.
1 1. There are 12 lighted candles on the table. First three were blown out by the wind, and then two were blown out by a gust of wind. Finally, how many candles are left on the table? -Five. The others were burned.
12. Grandma has 18 eggs, and she also keeps an old hen that can lay one egg a day. If her family eats two eggs a day, her eggs can be eaten for () days. - 17
1. Miss Wang recently moved into the teachers' dormitory. One day, Mr Wang stood on the balcony and looked down. There are three balconies below and five balconies above. How many floors are there in the teachers' dormitory? -Is the balcony from the 2nd floor or from 1 floor? There are 10 floors at the beginning of the second floor, and only 9 floors at the beginning of the first floor.
Six horses pulled a cart and ran 6 kilometers. How many miles did each horse run? -Six kilometers.
There are rows of trees along the park road, and the distance between each tree is 3 meters. What is the distance between the first tree and the sixth tree? - 15m。
4. Divide two numbers, the quotient is 5, the remainder is 20, and the maximum divisor is (No).
5. When Xiaohua goes to physical education class, the queue is 10 from front to back and 15 from back to front. He asked if there were (24) people in this team.
6. I know a child named Xiaolong, who loves learning very much. He always asks me to ask him questions. This day, he came to ask me questions again, and I said to him: There is a photo of our family with two fathers and two sons on it. Can you guess how many people are in the photo? Xiaolong guessed at once. Have you guessed? -3.
7、7/8。 Guess an idiom.
Xiaohua took 50 yuan's money to the store and bought a car worth 38 yuan, but the salesman only gave him 2 yuan's money. Why? Because he gave the salesman 40 yuan and only gave him 2 yuan.
9. Xiaoming is 15 years old, and Xiaoming's sister is 5 years old. Will Xiao Ming be twice as big as Xiao Ming's sister after too many teenagers? - 5
/kloc-0 0. There are nine apples in the basket. Mother wants Xiaoling to send these apples to a nearby kindergarten and distribute them to nine children in a small class. A child has an apple, and finally one will stay in the basket. Xiaoling scratched her scalp and said to her mother, "How do you divide this?" How to divide it? Do you know that?/You know what? Do you know that?/You know what? -One of the kids will take the basket.
1 1. There is a book that both brothers want to buy. Brother is short of 5 yuan, brother is short of 1 point. But two people buy books together, and the money is still not enough. Do you know the price of this book? -5 yuan. Brother has no money, brother has 4.99 yuan.
12. The fox bought a fur coat from 45 yuan in the old goat shop with counterfeit money from 50 yuan, and the old goat returned the money from 5 yuan to the fox. Do you know how much the old goat lost? - 50
1, Xiao Qiang this year 1 1 year old, Xiaojun this year1year old. How old is Xiao Qiang? Their age is 38. - 16
2. ooo △△△△△△△△△ ooo △△△ ooo ... What is the 50th number? - 0
3, 24 hours. (Type a Chinese character)-Old.
Children have breakfast together, with five children at each table. It takes five minutes for five children to eat five biscuits, so how many minutes does it take for eighty children at sixteen tables to eat eighty biscuits now? -Five minutes.
Interactive meeting:
1. Xiaohong invited seven children to have dinner with her for her birthday, each with a rice bowl, two vegetable bowls and four soup bowls. They use (14) bowls.