2. The percentage of () in () is called interest rate. In 2007, the per capita water resources in Fu 'an City was 98.2% of that in 2006, and the per capita water resources in Fu 'an City decreased by ()% compared with that in 2006.

3. Interest = ().

4,3 ÷ 4 = = ()% = () Fold = () (decimal).

5. 16 is ()% of 20 and 20 is ()% of 16;

16 is less than 20 ()%, and 20 is greater than 16 ()%.

5 is 3 after subtracting its ()%, and the number 37.5% more than () is 12 1.

6. There are 285 male employees and 2 15 female employees in a factory, of which ()% are male employees and ()% are female employees. One day, four people asked for leave because of something, and the attendance rate of this day was (). In a workers' skill test, 387 people achieved excellent results, and the excellent rate was ().

7. In order to promote sales during the Spring Festival, a clothing store sells all goods at a 15% discount. The "15% discount" here means that () is ()% of ().

Xiaohua bought a toy car. The original price is 240 yuan, and now it's 20% off. Xiaohua should pay () yuan.

9. The turnover of Tian Tian Supermarket last month was 4.2 million yuan, and the business tax was paid at 5% of the turnover. This supermarket should have paid () ten thousand yuan in business tax last month.

10, Lao Li deposited 1000 yuan in the bank for one year, with an annual interest rate of 3.87% and interest tax of 5%, and after-tax interest () yuan will be available at maturity.

1 1, the original price of a pair of sneakers with a 15% discount is 204 yuan, and the original price of this pair of sneakers is () yuan.

12. The turnover of a market in February was 600,000 yuan less than that of 1 month, which was 50% of that of/kloc-0. The turnover in February was () 10,000 yuan.

Second, multiple-choice questions: (fill in the serial number of the correct answer in brackets)

1, "This year's grain output increased by 30% compared with last year" can be classified as ().

① Last year's grain output × 30% = This year's output is higher than last year's.

② This year's grain output × 30% = this year's output is higher than last year's.

(3) This year's output is 30% higher than last year = last year's grain output.

(4) This year's output is 30% higher than last year = this year's grain output.

2, A number is 25% more than B number, then B number is less than A number ()

No! The reference source could not be found. Wrong 25%! The reference source could not be found. Wrong by 20%! The reference source could not be found. 100% error! The reference source could not be found. 80%

3. The original price of a TV set was 1200 yuan, and now each TV set is only sold in 960 yuan. The price has been reduced ().

①25% ②20% ③50% ④ 15%

4. The oil yield of a soybean is 16%, and 200 kg of this soybean can squeeze out soybean oil ().

① 32kg ② 1250kg ③ 16kg

5. After the water price of residents in a city is increased by 20%, the price per cubic meter is 1.8 yuan. The formula of the price per cubic meter before the price increase is ()

No! The reference source could not be found. 1.8× 20% error! The reference source could not be found. 1.8÷20%

No! The reference source could not be found. . 1.8 ÷ (1-20%) error! The reference source could not be found. 1.8÷( 1+20%)

Third, true or false:

1. A number is increased by 20% and then decreased by 20%, and the size of this number remains the same. ( )

2.62 The number of boys in class is the number of girls, and the number of girls accounts for 40% of the class. ( )

3. A store engaged in promotional activities, and a down jacket with a price of 1000 yuan was given a 20% discount. If Miss Wang has a VIP card of this store, she can get a 15% discount. She only spent 760 yuan on this down jacket. ( )

An insurance company had a turnover of 620 million yuan last year. If the business tax is paid at 5% of the turnover, the business tax should be paid 0.3 1 100 million yuan last year. ( )

Fourth, do math.

1. Write the calculation result directly.

50×0.2%= 1+25%= 2÷ 125%=

20%×5%= 30%×50%= 25÷62.5%

2. Solve the equation.

0.25+25% x = 1.5 x-20% x = 40 x+x =

3. Calculate with recursive equation.

80+80×25% ( 1-30%)×20%

50÷( 1-20%) 1.3×35%+87%÷

Fifth, look at graphic calculation. .

80%

20% more

60 kg

120km

Sixth, the application problem.

1. Dongfeng electric vehicle factory planned to produce 1200 electric vehicles in the first quarter of last year, but actually produced 96 more. What percentage of the plan has actually been completed?

2. The interest earned from education savings is tax-free. Teacher Wu saved 50,000 yuan for three years' education, with an annual interest rate of 5.22%. How much principal and interest can I get from the bank after maturity?

Huang Song bought four amusement park tickets with a 15% discount, one of which was used to go to 340 yuan. What is the original price of each amusement park ticket?

Teacher Huang's monthly salary is 2500 yuan. According to the individual income tax law, after deducting the balance from the monthly income of 2,000 yuan, individual income tax shall be paid in the following proportion. How much personal income tax should Mr. Huang pay every month?

The price of a ballpoint pen in the shop is 30% of that of a pen. Zhang Hua bought 1 pen and 1 ballpoint pen flowers with 6.5 yuan. How much is a pen and a ballpoint pen?

6. Jianshe Township planted 4 1.4 million trees this year, an increase of 1.5% over last year. How many thousand trees were planted last year?

7. Blue whales swim at the speed of dolphins every hour, which is just faster than dolphins 10 km. How many kilometers can blue whales and dolphins swim per hour?