Xiao Qiang read a 60-page science and technology book, and read all the pages in one morning.
I read 20% of the total pages in the afternoon. How many pages are left?
There are 320 senior students in a primary school, accounting for the total number of students in the school.
The lower grade is the whole school.
How many students are there in the lower grades?
4. A batch of Arowana ate 400 barrels of blended oil and sold it on the first day.
Sell the rest the next day.
How many barrels were sold the next day?
5. A batch of parts, the master worked alone for 20 days, the apprentice worked alone for 30 days, and after the master and the apprentice worked together for 4 days, how many parts have not been made in this batch?
6.
A highway has been built now.
It's 25 kilometers from the midpoint. How long is this road?
7. The transportation team went to the warehouse to transport cement, and the total amount was shipped on the first day.
The next day, 36 tons of cement were shipped, and the total amount was shipped in two days.
How many tons of cement are there in the warehouse?
Class 8.6 (1) has 48 students on a certain day, and two of them ask for sick leave to ask about the attendance on that day.
8. There are three ropes, the first one.
M, than the second one.
long
Rice, the third root is longer than the second.
Mi, how long is the third rope?
9. Original price of a TV set 1500 yuan, current price 1200 yuan. What's the current price of this TV set? How much is the price of this TV set reduced?
1 1. A bus and a truck leave from A and B at 8 am respectively. The speed of the bus is 60 kilometers per hour, and it meets the truck in 7/ 12. It is understood that it takes 8 hours for the truck to complete this journey. What time did they meet?
12. Two chicken farms, A and B, have the same number of chickens, and the number of cocks in A chicken farm is the number of hens in B chicken farm.
The number of cocks in chicken farm B is the number of hens in chicken farm A.
What is the number of hens in chicken farm B compared with that in chicken farm A?
13. Young pioneers planted trees, and the known survival rate was 94%. There are 44 fewer trees alive than alive. A * * *, how many trees have been planted?
15. Two trains, A and B, go from A to B and C respectively. It is known that the distance between A and B is 9/ 10 of the distance between A and C. When A train travels 60 kilometers, the ratio of the distance traveled by B train to the remaining distance is 1: 3, and the distances between the two trains to the destination are equal. Find the distance between a and C.
16. Warehouse A and Warehouse B have 100 tons of grain. If 8 tons are brought in from Warehouse A, Warehouse B will take it away.
Then the grain in the two granaries is equal. How many tons of raw grain are there in granary A and granary B respectively?
17. After improving the technology, Li Shifu produces 120 parts per day, which exceeds the original daily output.
How many parts does Li Shifu produce every day?
18. There are 150 peach trees in the orchard. The number of pear trees is peach trees.
And apple trees.
. How many apple trees are there?
19. A rope was cut off for the first time.
Cut it off the second time.
M, 2.05 meters left. How long is this rope?
20. The production team produced a batch of parts. The original plan is 2 1 day, and the average daily output is 1.8 million. The actual output of parts is 65,438+0.05% of the planned output. How many parts were actually produced?
2 1. The price of a set of tables and chairs is 105 yuan, of which the price of chairs belongs to desks.
. What's the price of this chair?