Class: Student: Score:

First, fill in the blanks. (2 points for each question, ***20 points)

1. The average distance between the earth and the sun is about149,500,000 kilometers, which is rewritten as () million kilometers in units of "ten thousand" and rounded to hundreds of millions, which is about () million kilometers.

2. When 2 hours and 40 minutes = (), a bottle of wine is 50 ()

3. If you see four saws on a 2-meter-long piece of wood and divide it into equal sections, then each section is () of the whole wood, each section is () meters, and three sections are () of wood.

4.=0.375=( )÷24=( ):( )=( )%

5. A machine part with a length of 1.6m and a length of 4cm is drawn on the drawing. The scale of this picture is ().

6.2-: 1.8 The simplest integer ratio is (), and the ratio is ().

7. If number A =2×2×3 and number B =2×3×3, then the greatest common divisor of number A and number B is () and the least common multiple is ().

10, Xiaohua will help her mother do the following things on weekends: it takes 20 minutes to wash clothes with the washing machine; It takes 6 minutes to sweep the floor; It takes 10 minute to clean the furniture; It takes five minutes to dry the clothes. After reasonable arrangement, it will take her at least () minutes to finish these things.

9.a△b= then 2△ 10= ()

10. The base of an isosceles triangle is 3cm, its shape is () and its volume is ().

Second, the judgment question. (Tick √ for the right and × for the wrong. ***5 points)

1. Two numbers with common divisor 1 are called prime numbers. ( )

2. Time is fixed, and the time to produce each part is inversely proportional to the number of parts produced. ( )

There are 20% fewer peach trees and 20% more pear trees than peaches in the orchard. ( )

4.Tiger mistyped 4X+8 as 4(X+8), so the result is 8 more than the original. ( )

5. A triangle with two acute angles must be an acute triangle. ( )

Third, multiple choice questions. (5 points)

1. To indicate the change of quantity, you should select ().

A. Bar chart B. Line chart C. Fan chart

2. Mark numbers on six faces of an object, so the possibility of "2" facing upwards is-how to mark the numbers on the faces ()?

A. Only 1 face is marked as 2 B, two faces are marked as 2 C, and three faces are marked as 2.

3. On the square iron sheet with a side length of 4 cm, cut out small discs with a diameter of 2 cm, and at most () pieces can be cut.

A.3 B.4 C .5 D.6

4. During the "May Day" Golden Week, Mall A launched a "10% discount", and Mall B launched a promotion activity of "100 yuan for shopping vouchers 100 yuan". Uncle is going to spend 200 yuan on shopping, and shopping in () mall is more economical.

A.A.B.B.C.A and b are the same.

5. Party A and Party B climb stairs from the ground floor (the first floor) (the number of stairs between each floor is the same). When Party A ran to the fourth floor, Party B happened to arrive at the third floor. At this rate, A goes to the 16 floor, and B goes to the () floor.

A.9 Building B 10 C Building 1 1 D Building 12

Fourth, the calculation problem.

1. Write the number directly. (10)

1994-699= 1.6+0. 16= 1/3×3÷3= 2.8÷28%=

0. 1÷0.0 1= 3÷ 1/4- 1/4÷3= 5/9- 1/9×0= 24×5=

0.99×9+0.99= 5/9×2÷5/9×2=

2. Off-mold calculation. (15)

584+8008÷26× 15 9.72× 1.6- 18.305÷7

(2/3+2/ 15)×60 (4/5+ 1/4)÷7/3+7/ 10

4/7÷[ 1/3×(3/5-3/ 10)]

3. Solve the equation. (8 points)

x-0.8x=22 4/3x+8×8/2= 16

2.4x-0.45×2 = 0.3 3/4x+x = 1.4

Verb (abbreviation for verb) measures and calculates. (7 points)

1. Find the shaded area in the figure below. (4 points)

2. Find the volume below. (4 points)

Sixth, the application problem. (30 points)

1. What percentage is the price of a certain commodity 120 yuan lower than that of 30 yuan?

On a farm, there are 22 chickens and rabbits with 58 feet. How many chickens and rabbits are there?

3. The cost of A and B is * * * 2200 yuan. A commodity pricing 20% profit, B mall pricing 15% profit. Later, according to the market situation, they were all sold at 90% of the pricing, with a profit of 13 1 yuan. What are the profits of A and B respectively?

May day is coming, and major shopping malls are using all kinds of tricks to sell goods.

The advertisement of clothing supermarket is: over 300 100.

The advertisement of star supermarket is: 30% off the whole audience (30% off the original price)

The advertisement in the department store is: 50% off the whole audience (50% off the original price)

After reading these advertisements, if Xiao Fang's mother wants to buy a sweater made in 200 yuan, what do you suggest? Please explain the rationality of your choice of method.

5. Party A and Party B leave from place A at the same time and go to place B and place C respectively. It is known that A and B have a speed of 96 kilometers per hour. The speed ratio of A and B is 9: 7. They just arrived at B and C at the same time, respectively, and B immediately returned at the original speed. After a 40-minute journey, A was informed at B and asked to return immediately, and arrived at A at the same time as B ... A increased the original speed by 20% when returning, so that both of them landed at the same time. How many kilometers is the distance before BC?

Seven. Additional questions: (20 points)

1. A milk company wants to design a cuboid box that can hold 12 cans of milk. The milk tank is cylindrical, with a bottom diameter of 6 cm and a height of 10 cm.

(1) Please design a more reasonable packaging box for this company (briefly describe your plan in words).

(2) Figure out how much cardboard you need for the box you designed?

There are two candles with different thicknesses. A thin candle is twice as long as a thick candle. It takes 1 hour to light a thin candle and 2 hours to light a thick candle. Once there was a power outage, two unused candles were lit at the same time. When the phone call came in, I found that the remaining length of the two candles was the same. How long was the power outage?