fill (up) a vacancy

1, which is both a factor of 24 and a multiple of 6, has ().

2. In the natural number1-10, () is even but not a composite number, and () is odd but not a prime number.

3, 250 square meters = () hectares =()45 points.

4, 4 ÷ 5 = = () Fill in the decimal.

5. There are 45 students in Class Five (1), including 25 boys, and boys account for () of the class and girls account for ().

6. Divide the 5-meter-long rope into 8 segments on average, each segment is () meters long, and each segment accounts for () of the total length.

7. The simplest true fraction with denominator of 8 is (), and their sum is ().

8. There are 8 red balls and 4 yellow balls of the same size in the pocket, from which you can randomly draw 1 ball. The possibility of drawing the red ball is (), the possibility of drawing the yellow ball is (), and the possibility of drawing the ball is the greatest.

9. Fill in the appropriate score in the □ below and the appropriate decimal in the □ above.

□ □

0 1 □ 2 □ 3

judge

1, the numerator and denominator of the fraction are multiplied or divided by a number at the same time, and the size of the fraction remains the same. ( )

2 is a false score, so A may be greater than B. ()

3. Naughty and Xiaoxiao donated their books to Hope Stack respectively, and Naughty donated more books. ( )

Four ... The number of points in the fifth grid is 1+4× 5 = 2 1. ( )

5. Draw a rectangle into a parallelogram with equal area. ( )

Third, the choice (2 points for each small question, *** 12 points)

1, the maximum multiple of one number is 18, and the minimum multiple of another number is 24. Their greatest common factor and least common multiple are () respectively.

a、2,36 B、6,72 C、3.48

2. The bottom of the triangle remains unchanged. If the height is expanded by 4 times, then its area ().

A, expand by 4 times B, expand by 2 times C, which is uncertain.

3. As shown in the figure, A gets 1 point for touching the white ball and B gets 1 point for touching the black ball, which is the fairest in the box ().

Xiaojun started from home and went to the bookstore to buy books. When he was halfway through. Remember not to forget to bring money. So he went home to get the money, then went to the bookstore, bought some books and went home. The following picture () accurately reflects Xiaojun's itinerary.

Because.

B.C.

5.5 yuan and 10 yuan have 20 RMB * *, 1 RMB * * is 175 yuan, and 5 yuan has () RMB.

a、5 B、 10 C、 15

6. Among the following scores, the closest to "1" is ().

A, B, C,

Fourth, calculation

1, see who calculates correctly and quickly.

+= += —=

2—= += +=

Calculate the following questions as simply as possible.

2-(+) ++ 1-+

Solve equations.

x﹣ = 0.5x+7.5x= 16

Calculate the area.

Verbs (short for verb) solve problems.

1, Xiao Zhang made five parts in eight minutes and Xiao Li made seven identical parts in nine minutes. Who makes it faster?

There are 24 red flowers and 9 yellow flowers to be distributed to several students. Everyone is asked to share the same color and number of flowers. How many people can they share at most? How many red flowers does each person have?

There are some fruits in the fruit shop. They were sold on the first day and the second day. How much is left?

4. The school should tile the classroom. If you use a rectangular floor tile with a length of 3 cm and a width of 2 cm, it just covers 800 tiles. If you use a square floor tile with a side length of 8 cm, how many pieces do you need at least?

1The teacher took 45 students to the People's Park for boating. The ship is limited to six people, and each 24 yuan is limited to a small boat.

Four people, each 20 yuan, how to rent a boat?

6. Holiday Travel Agency offers two preferential schemes, A and B, for one-day tour.

Scheme A: 40 yuan for children and 60 yuan for adults.

Scheme B: A group of more than 5 people (including 5 people), each with 50 yuan.

Question 1. What plan should three adults take with four children? What's your reason?

2. How to buy a ticket?

I. Oral calculation (6 points)

Fill in the blanks (14)

(1)6.0 1 kg = () 3 square meters 70 square decimeters = () square meters

1.3 hours = () hours () minutes 54 decimeters = () meters

(2) The quotient of two numbers is 4.5. Divider and divisor are expanded 20 times at the same time, and the quotient is ().

(3) From someone's ID number 441900199607123452, we know that this person's birth time is () and his gender is ().

(4) Xiaohong bought two pens, each of which cost X yuan. Paid 20 yuan, she should get back () yuan.

(5) The commercial summary method of 8 ÷ 3 is marked as (), and the accuracy is ().

(6) The base of the parallelogram is 8 decimeters, the height is 6 decimeters, and the area is () square centimeters.

(7)0. 125×( )=0. 125÷( )= 1

(8) Arrange 3.05, 3.05, 3.05 and 3.2 in descending order.

(9) The area of a triangle is 15 cm2, the base is 5 cm, and the height is ().

(10) Master Wang can produce B pieces in 3 hours, and can produce () pieces per hour, and it takes () hours to produce one piece.

(1 1) The base of the parallelogram is10cm and the height is 6.4cm.. The area of a triangle with the same height as the base is () square centimeters.

Three judgments (5 points) (mark "√" for the right and "X" for the wrong)

(1) The area of a triangle is equal to half the area of a parallelogram. ( )

(2)x=2.5 is the solution of the equation 14.5-2x=9.5. ( )

(3) Formulas containing unknowns are called equations. ( )

(4) The multiplication and division method expressed by letters is (ab)c=a(bc). ( )

(5)4.28428428 is a cyclic decimal, and the cyclic segment is 428. ( )

Four. choose (5 points) (Fill in the letters of the correct answer in brackets)

(1) The following is the existence of the equation ().

a2y+8b 2x- 15 & gt； 7 C 2y-5= 18

(2) The result of the following () is greater than 1 1.6.

a 1 1.6×0.98 B 1 1.6÷0.98 C 1 1.6÷ 1.98

(3) Because 2.75×38= 104.5, 27.5×( )= 10.45.

A 0.038 B 0.38 C 3.8 D 38

(4) When the base and height of a triangle are expanded by four times, its area will be expanded by () times.

a、4 B、8 C、 16

(5) The height and area of parallelogram and triangle are equal. The base of a given parallelogram is 4 cm, and the base of a triangle is () cm.

A 4 B 8 C 2

Verb (abbreviation for verb) calculation. (28 points)

1. Solve the equation (6 points)

2χ-3.4=7.2 2.4x+ 1.6x=2.2

2. Only calculate formulas or equations, not calculate (4 points)

What is the result of dividing (1) 1.2 by the quotient of 3.96 and multiplying 2.7 by 13.7?

②20 is more than four times a number, 10. Find this number.

3. Calculate the following questions. What can be simplified must be simplified. (18)

9.5× 1.06-2.52÷2.4 6.25÷ 1.25÷0.8 2.5×(3.5- 1.65)×0.4

27.2÷(3.2+23×0.6) 68.5+3 1.5÷(0.29+0.4 1) 3.82 ×(2.8- 1.3)- 1.82× 1.5

Six. Hands-on practice (10)

Xiao Gang observed a teapot. Which direction did he look?

3. Draw a parallelogram on a set of parallel lines on the right, so that

Its opposite sides are on these two parallel lines, and the sides are long.

It is 2 cm, and then draw its height.

Seven. Solve the problem. 32 points

1. Read the requirements before you answer.

Xiaoming bought 4 kilograms of sweet oranges and 3 kilograms of apples with 35 yuan. It is known that how much is sweet orange per kilogram of 5.2 yuan and apple per kilogram? 3 points

(1) Write the equivalence relation that meets the meaning of the question.

(2) List the equations that have not been calculated:

2. 680 kilograms of rice per square meter of paddy field. Trapezoidal paddy field with upper bottom17m, lower bottom 8m and height 7m. How many kilograms of rice can this paddy field produce? 3 points

(1) How many kilograms of rice can this paddy field produce? We must find out first.

(2) Only the comprehensive formula is not calculated:

3. List solutions. 26 points

(1) The bottom of the triangular glass is 12.5 decimeter and the height is 7.8 decimeter. If the price of glass per square decimeter is 0.8 yuan, how much does it cost to buy this kind of glass?

(2) A construction site shipped 32.5 tons of stones on the first day, 0.5 tons more than four times the next day. How many tons of stones were delivered the next day?

(3) A grain transportation team, with 5 vehicles transporting 22.5 tons of grain. According to this calculation, how many vehicles are needed to transport 1 18 tons of grain?

(4) The processing workshop has to process 875 parts, which has been processed for 3.5 hours, and 50 parts are processed every hour. The rest will be processed at an average speed of 56 pieces per hour. How many hours will it take to finish this task? (Equation solving)

(5) The school organized teachers and students to watch movies, with 950 students and 27 teachers. 8 yuan, an adult, and 4 yuan, a student. More than 30 people can buy group tickets, group tickets to 6 yuan. Please design the most economical ticket purchase scheme. How much will it cost at least? (There must be a calculation process)