Current location - Training Enrollment Network - Mathematics courses - Yesterday's math class
Yesterday's math class
1. An economic and technological development zone attracted 800 million yuan of foreign investment in the first half of last year;

(1). The investment in the second half of the year was1200 million yuan, a few percentage points more than the previous year?

( 12-8)÷8

(2) The second half of the year attracted 400 million yuan more than the first half, and by what percentage?

4÷8

(3) Compared with the foreign capital introduced in the first half of this year, it is 20% less. How much foreign capital was introduced in the first half of this year?

8-8×20%

(4). It is 80% of the foreign capital introduced in the first half of this year. How many billion yuan of foreign capital was introduced in the first half of this year?

8÷80%

(5) The foreign capital introduced in the first half of this year is equivalent to 1.20% in the first half of last year. How many billion yuan of foreign capital was introduced in the first half of this year?

12÷ 120%

2. The factory produced a batch of machines in the fourth quarter, and completed 3/8 of the plan in 10/month, 40% in1month, and produced 65 more tools in1February, which can exceed the output 10%. How many machines does the factory plan to produce in the fourth quarter?

65÷(3/8+40%)

3. Zhang Ying has read 150 pages, and there are still 30 pages left to read:

(1). How many pages are read than unread?

( 150-30)÷30

(2) What percentage of unread pages are less than those read?

( 150-30)÷ 150

4. The planned cost of building the bridge is120,000 yuan, which is actually 6 million yuan more than planned. What percentage is actually more than planned?

600÷ 1200

The bicycle factory planned to produce 800,000 bicycles this year, but actually produced 200,000 more bicycles. What is the percentage of overproduction?

20÷(80+20)

6. It takes an athlete eight hours to climb a mountain and five hours to descend it. What percentage is the speed of going downhill faster than that of going uphill?

(8-5)÷8