First, think about it and fill it out.

1, 28.6% read (), 0.07% write ().

2. The speed of the train is 120km/h, the speed of the swallow is 150km/h ... the speed of the train.

The temperature is 80% of the swallow's body temperature.

3、0.6= ( )( ) =( )∶( )= ( )25 =( )%

4. The ratio of A and B is 3∶4, and A is ()% of B. ..

5. Less than 80 meters, 20% is () meters, and 20% is 60 meters.

There are 20 boys and 30 girls. Boys account for ()% of girls, boys account for ()% of classes, and girls are more than boys ()%.

7. The turnover of a hotel in September was 78,000 yuan. If the reward of business is 5% of turnover,

Tax, () yuan should be paid in September.

8. The orchard planted 200 fruit trees this year, and they survived 198. The survival rate of these fruit trees is

( )%。

9. The original price of a bicycle is 560 yuan, and the price of this bicycle after 15% discount is () yuan.

10, complete the table below.

Score 1/8

Decimal 0.5 0.4

Percentage 20% 75%

Second, discerning right from wrong.

Germination experiments were carried out with 1, 1 10 seeds, and all of them germinated. The germination rate of these seeds was 1 10%.

2. This year's output has increased by 20% compared with last year, and this year's output is equivalent to last year's 120%.

A 10% discount on a dress means that the dress is 90% cheaper than the original price. ( )

4. A rope is 9 10 meters long, which can be written as 90% meters. ( )

5、 π >33.3% ( )

The chemical composition percentage of 6.0. 12 is 0. 12%. ( )

Third, sit in the right position.

1, a pile of coal, 40% used, this pile of coal still has ().

A, 40% B, 60% C, 60 tons d, uncertain.

2. A factory completed 75% of the plan in the first half of the month, completed 12 in the second half of the month, and increased production this month.

( )。 a、25% B、45% C、30% D、20%

3. The qualified rate of a textile is 98%, and () of 300 products are unqualified.

a、2 B、4 C、6 D、294

4. Lili's family used 50 kwh of electricity last month, and this month it saved 10 kwh of electricity, which was () less than last month. a、80% B、50% C、40% D、20%

5. The colored part in the picture on the right is expressed as a percentage ().

a、 150% B、 15% C、 15% D、5 10

6. Among 3. 145, 3. 14, π, 3. 14%, the largest number is ().

a、3. 145 B、3. 14 C、π D、3. 14%

7.A is 240, B is 25% more than A, and B is ().

a、60 B、240 C、300 D、 125

8. 25g of salt is dissolved in100g of water, and the weight of salt accounts for () of salt water.

a、20% B、25% C、 100% D、 125%

Fourth, solve the problem.

1, 800 kilograms of wheat can grind 576 kilograms of flour. What is the flour yield of wheat?

2. White rabbits and gray rabbits were raised in the feeding group. 36 white rabbits, 12 gray rabbits, white rabbits and gray rabbits.

What percentage of the total respectively?

3. A township afforested 15 hectares last year, and afforested 18 hectares this year, a few percentage points more than last year?

4. Of the 360 students in Yucai Primary School, 5% did not participate in interest activity groups.

How many people are there in the interest activity group?

5. Teenagers' clothing stores offer seasonal promotions. The original price of each half sleeve is 50 yuan, and now it is 20% off. Xiao Lin bought three pieces. How much is a * * *?

6. Grandpa Wang deposited 5,000 yuan in the bank for 3 years, with an annual interest rate of 4.4 1%.

(1) How much interest tax does Grandpa Wang need to pay when the withdrawal is due?

(2) How much can Grandpa Wang get in the end?