There are 90 story books in the small library, and 40 have been lent out. How many books are left?
3. There are 48 people in the school choir, including 20 men and how many women?
Xiao Ming has read 78 pages, but there are still 20 pages missing. How many pages are there in this book?
5. Mom, 83 Qian Qi, how much money is left to buy books, and go to 30?
6. There are 36 books on the shelf. Take some. There are nine books on the shelf. How many books did you take?
7. There were 45 cars in the parking lot, but by noon there were 30 fewer. How many cars are there in the parking lot?
8. After some cars were driven away from the parking lot, there were 12 cars left, 20 more than the rest. How many cars did you drive away?
9. The store shipped 20 goldfish first, and then 80 goldfish. How many goldfish did this store ship?
10, there are 80 football and basketball in the school, including 30 football and how many basketball?
1 1. Mom bought 30 apples, ate some, and left 20. How much did she eat?
12, there are 40 buses in the bus station. Twenty buses were driven away for the first time, and 10 for the second time. How many buses were driven away for the second time?
13, Xiaojun is 7 years old this year. 10 How many years will it be?
14, a schoolbag 30 yuan and a pencil case 15 yuan, how much does it cost to buy a schoolbag and pencil case?
15. Buy a basketball 55 yuan and a football 40 yuan. How much is basketball more expensive than football?
16. There are 27 pots of chrysanthemums and 9 pots of Chinese rose in the park. How many pots are Chinese rose less than chrysanthemum?
17. Mom bought some peaches, ate 20, and there were 30 left. How much did she buy?
18, there are 20 senior one students, including girls 10, how many boys?
19, the teacher gave the students 30 Chinese books and the same number of math books, leaving 37 books. How many exercise books do you have?
20. Airport, 12 planes flew away for the first time, 6 planes flew away for the second time, and how many planes flew away for the second time?
2 1, Xiaoming has 14 apples. I ate six apples, as many as Xiaoyun. How many are there in Xiaoyun?
22. Xiaoming has 30 notebooks, Xiaohong has 35 notebooks, and Xiaohong has more notebooks than Xiaoming.
23. A car delivers 68 cases in the morning and 60 cases in the afternoon. How many boxes are delivered in the afternoon than in the morning?
24. Twenty-five planes flew away at the airport for the first time and twenty planes flew away for the second time. How many planes fly away at a time? How many fewer planes left the second time than the first time?
25. Li Li makes flowers with colored paper. Forty-five dollars have been used, and 10 is still needed. How many colored papers does Li Li need?
26. There are 24 boys and 20 girls in Grade One. How many students are there in a year? How many girls are less than boys?
27. Xiaoying jumps rope 89 times and Xiaoming jumps 80 times. How many times will Xiao Ming dance than Xiao Ying?
28. Xiaoyun blew 23 balloons, five of which were broken, and several others were not.
29. Xiaoqing brought 18 waste batteries, Xiaoyun brought five more than Xiaoqing, and Xiaoyun brought several waste batteries.