17×[38 +(54 -56 )] 4825 -7 15 ×35 ÷745

3. Solve the equation. (8 points)

4x+7.5 = 13 x-0.6 x = 5 56÷x = 3.3 8× 134-7 15 x = 7

4. Column calculation. (4 points)

( 1)

Fourth, solve the problem. (1-9 has 3 points each, and 10 has 4 points. 3 1 min)

1. There are 900 boys in the experimental primary school, and the number of girls is 79% of the boys. How many people are there in the experimental primary school?

2. A 20% discount on a dress is 160 yuan. How much cheaper is the current price than the original price?

3. The toy factory originally planned to produce 6000 sets of electric toys, but actually produced 15 more than planned. How many electric toys have actually been produced?

4. The actual cost of the new teaching building of Dongfang Primary School is 450,000 yuan, less than the original plan 1 10. How much did the original plan cost?

5. Xiaohua entered a manuscript. After 57 entries, there are 700 words left. How many words are there in this manuscript?

There are 300 peach trees in the orchard, of which 34 are apple trees and 35 are pear trees. How many pear trees are there?

7. The construction team built a road, and 23 roads with a total length have been repaired, with a distance of12m. How long is this road?

8. The library has 800 new books, including 365,438+06 science books and 35 story books. How many other books are there?

9. The north and south are double lines, with a total length of 630 kilometers. The express train takes 7 hours from north to south, and the local train takes 9 hours from south to north. Now they start from the south and the north at the same time. Will they meet in a few hours?

10. From City A to City B, you can take the expressway or take the train. It takes 3.5 hours for a car to travel 120 km per hour. If I change trains, the bus costs 56 pounds an hour. When can I arrive?

Verb (abbreviation for verb) fill in the form

Sixth, solve the problem.

1, there is a computer, and the price is 5200 yuan. If it is sold at a 15% discount, what is the price?

2. A bicycle factory planned to produce 1200 bicycles in the first quarter, but actually produced 1500 bicycles. What percentage of the plan has been completed?

3. To build a new factory, the planned investment is 2 million yuan, and the actual investment is only 6.5438+0.75 million yuan. What is the percentage of planned investment in actual investment?

4. An experimental field can harvest 1 1000 kg of sugarcane and squeeze 1320 kg of sugar to find the sugar yield of sugarcane.

5. The oil yield of rapeseed is 42%. How many kilograms of rapeseed does it take to extract 1050 kilograms of oil?

6. Xiaogang's mother bought a sweater and spent it on 360 yuan, accounting for 20% of the family expenditure this month. How much did Xiaogang spend this month?