2. A melon farmer transported 40 watermelons to the market and sold 25 in one morning. How much did he sell? How much is left? How much more than the rest? How much less is left than sold?
3. A bag of rice is 100 kg. On the first day, I ate a whole bag of rice. The next day, I ate the first day. How many Jin did you eat the next day?
Xiaohong weighs 45 kilograms, and Xiaoli weighs Xiaohong. Xiaohua's weight is Xiaoli. What is the weight of Xiaohua?
5. A rectangular billboard is12m long and12m wide. If one side of the advertisement is painted with red paint, it needs 0.4 kg per square meter. * * * How many kilograms do you need?
6. In the handicraft class, one group of students made 80 paper flowers, while the second group made more paper flowers than the first group. How many paper flowers did the two groups make?
7. Xiaoming has 2 1 this extra-curricular book. Xiao Qiang is younger than Xiaoming. How many books do they have?
8. The original price of a commodity in 48 yuan is now 30% off. How much is the price reduction?
9.48 yuan, the original price of a commodity, the price is increased first, and the price is reduced because of unsalable sales. What's the current price?
10, Xiao Wang saved 4200 yuan last year, which increased in the first half and the second half of this year. How much does Xiao Wang have now?
1 1, a book of 192 pages, I finished it on the first day, and the rest on the second day. How many pages are left?
12, Xiaoying has 128 pictures. Give all of them to A first, the rest to B, the rest to C. How many pictures does Xiaoying have left?
13. Forty-eight sixth-grade students from a school participated in after-school groups, including basketball team, volleyball team and chess activities. What is the number of students who take part in chess activities?
14, someone went from a to b, completed the journey on the first day, and then completed the journey every day, asking when to complete the journey that day.
15. A pair of trousers, 90 yuan, is a coat. Do you want to know the price of this coat?
16. Repair a section of road. I repaired 80 meters on the first day, but there is still work to be done. How long is this paragraph?
17, a copper wire, used, and rice leftover, for the whole length?
18. There are 4 hectares of orchards in Zhang Cun. Apple trees occupy the orchard area, while pear trees occupy it. How many hectares of pear trees are there?
19. In a math contest, three students won the first prize, accounting for the number of second prizes, and the number of second prizes accounted for the number of third prizes. Find the total number of winners.
20. Party A, Party B and Party C type a manuscript. Party A has finished it all, Party B has finished it all, and Party C has finished the remaining 45 pages. How many pages do you want in this manuscript?