(Time: 60 minutes, full mark: 100)

First, fill in. (Per grid 1 minute, ***30 points)

1.45kg is ()% of 40kg, and 40kg is.

()% of 45 kilograms. 2.58, 0.62, 62.7%, 23, 0.67, 0.625, the maximum number is (), the minimum number is (), () and () are equal. 3.( )÷8=9( )=0.75=( )∶20

= 124+( )=( )%=3+( )244.

Score 2

five

seven

eight

Decimal 0. 130.375

per cent

55%

5.206.7% is pronounced as ()

, 0.0907% write ()

. 6. The ratio of peach trees to pear trees is 7∶ 1.

Peach trees account for ()% of the sum of peach trees and pear trees, and peach trees account for ()% of pear trees.

7. 50 soybean seeds were planted,

Two seeds did not germinate, and the seed germination rate was ()

. 8. The price of a TV set is now reduced by 13%, and the current price is ()% of the original price.

9.

A 15% discount on laptops means that the current price is ()% of the original price.

. 10. This year's corn output increased by 25% compared with last year.

That is, this year's corn output increased by ()% compared with last year.

Second, choose one. (65438+ 0 points for each question, ***5 points)

1. The school planted some trees, 48 survived and 2 did not.

The formula for calculating the survival rate is (

)。 A.2

48

× 1

00% b 248+2× 100% c

48

48+2

× 100%2. A book has 200 pages and has read 40%.

How many pages are left? The formula is ()

. A.200×40%

200-40%

C.200×( 1-40%)3。 The score is greater than 19 but less than 25% (). A. Only1b. There are infinitely many B.

C. Limited quantity

4. 14.7% If the percentage sign is removed, this number is (). A. expand to the original 100 times.

B. it is reduced to the original 1 100.

C. Same size

5. The number of table tennis in the gymnasium is 150% of the number of basketball. So the ratio of basketball to table tennis is

( )

. A.3∶2B.2∶3

C.3∶ 1

Third, sentence. (65438+ 0 points for each question, ***5 points)

1.43, 58km and 239 can all be converted into percentages. ( )

2. Percentages can be divided into fractions whose mother is 100. () 3. 25% of A and 14 of B.

Must be equal. () 4. Production 102 pieces, 99 pieces are qualified.

The pass rate is 99%. ( )

5.34.5% is expanded to 3.45 times the original 10.

( )

4. Exchange of percentages, fractions and decimals. (4 points for each question,

*** 16)

1. Convert decimals into percentages.

0.45 2.8 1. 147 0.03

Unit 3 Comprehensive Optimization Evaluation Test Paper

Answer: Weihe plain

2. Convert percentages to decimals or integers.

6% 0.25% 300% 15.6%

3. Turn the score into a percentage.

38 47 54 27

50

4. Percentage of the number of components.

135% 0.8% 2 10% 2%

Five (3 points for each question, ***6 points)

1. Sort the following numbers in descending order. 2.35

、2.35%、235%、0.235、2.3

53

2. Arrange the following figures in descending order.

0.3 1, 1

three

,

30%,3 1 1,0.3 13

Sixth, operational issues. (4 points for each question, ***8 points)

1. Draw 30% of the whole graph with diagonal shadow first (

), and then draw 50% diagonal shadow grid shadow.

()。 2. Divide the square below into triangles and ladders

Shape, so that the triangle area accounts for 40% of the square area.

Mark the length and height of the bottom of the triangle in the picture.

Seven, solve the problem. (5 points for each question, ***30 points)

1. A book has 360 pages, and 270 pages have been read.

What percentage have you never read?

2. The health inspection department extracts meat from major supermarkets.

Check and find out the qualified meat food and unqualified meat.

The ratio of food is 197∶3,

What is the unqualified rate of these meat products?

Xiao Li and Xiao Xin are both stamp collectors.

Xiao Li has fewer stamps 15 than Xiao Xin.

,

What percentage of Xiaoxin's stamps are Xiao Li's? What is the percentage of Xiaoli's stamps in the total number of stamps for two people? (Keep 1 decimal places before the percent sign.

A factory produced 4860 computers in August,

September is more than August 140.

What is the percentage of output in August in September?

6. The sixth-grade students of Maple Leaf International School visited the model exhibition of Shenzhou 7 return capsule, and there were 498 people present, but less than 2 people, in order to get the attendance rate of this activity. 6. Make a big square with eight cubes 1 cubic centimeter.

A cube. If you remove 1 cube, its volume is

What was the volume of the original big cube? Its surface

What is the percentage of products?