1. Fill in the blanks (1.5 ×22 =33)
1. Of the ten natural numbers from 1 to 10, (9) is both odd and compound; Both even and prime (2); (1) is neither a prime number nor a composite number.
2. The greatest common factor of18 and 24 is (6), and the smallest common multiple is (72).
0.5m 3 =(500)dm3+0:25 =(5/3) at 3.65438.
4. Divide 5 kg of sugar into 8 bags with equal mass, each bag is 65438+ 0/8 of these sugars, and each bag is 5/8 kg.
The decimal unit of 5 is (1/7), and it has (5) such units. Such unit addition (2) is the natural number 1.
6、 。 9/ 12= 12/36=0.75=36/48=54/72
7. The largest three digits divisible by 2, 3 and 5 at the same time is (990).
8. Use a cube with a side length of 1cm to form a cuboid with a length of 4cm, a width of 3cm and a height of 2cm.
(1) needs (52) small cubes; (2) The surface area of the assembled cuboid is (46)cm2.
9. Uncle Wang plans to finish the processing of a batch of parts in 10, and process this batch of parts every day on average (110), and the rest will be (3/ 10) after 7 days.
10, Xiaoming 4 hours18km, Xiaohua 5 hours 2 1 km. (Xiaoming) Come on.
Second, true or false questions (2 points ×5 questions = 10 points)
1 and 18 have six different factors. (right)
Xiaoming said that the size of his refrigerator is as big as its volume. Add 12 to the denominator of (wrong) 3 and 12 to the numerator to keep the size of the fraction unchanged. (error)
Divide the three cakes into five equal parts, one for each. (Wrong) 5. A three-digit number, the number on each digit is a(a is not zero), and this three-digit number must be a multiple of 3. (right)
Third, multiple-choice questions (2 points ×6 blank = 12 points)
1 and A ÷ B = 5, then the greatest common factor of A and B is (b) and the smallest common multiple is (a).
A, B, B, C, D, A
2. The following figure (b) is an expanded view of the cube.
A, B, C,
3. Combine 3 girls and 4 boys into a group, and the number of girls in this group (b).
A, B, C,
4. Among the following figures, (b) can't be converted into a finite decimal.
A, B, C, D,
5. In the figure below, (c) is rotating; (a) is an axisymmetric figure.
A, B, C,
Four, calculation questions (3 points ×8 questions =4 points)
1. Recursive equation calculation. What can be simplified should be simplified. )
( 1) =3/7 (2) =2 55/56
(3) =2 (4) =7/ 18
(5) =27/45 (6) =7/ 12
2. Solve the equation
( 1) (2)
X= 1 x=4/3
Five, the operation problem (3 points)
Draw a picture after the trapezoidal ABCD rotates 90 counterclockwise around point C.
Six, solve the problem (18 points)
1. In data 24, 28, 25, 24, 23, 24, 26 and 27, what are the modes and the average respectively? (2 points)
(24+25)÷2=24.5
(24+28+25+24+23+24+26+27)÷8=2.5625
A: The mode is 24, the median is 24.5 and the average is 2.5625.
2, a barrel of oil, the first use of kilograms, the second use of 0.9 kilograms, leaving kilograms. How much does this barrel of oil weigh? (2 points)
0.9 kg = 9/ 10 kg
3/5+9/ 10+ 1/2=6/ 10+9/ 10+5/ 10
= 15/ 10+5/ 10
= 20/ 10 = 2 (kg)
A: The original weight was 2 kilograms.
3. A cuboid water tank, measured from the inside, is 1.2dm long, 4dm wide and 8dm high. How many liters of water can this tank hold at most? (3 points)
1.2×4×8=38.4 (length)
Answer: It can hold 38.4 liters of water.
4. A flag bearer walks in front, and the honor guards are heroic. Six people in a row are neat, eight people have no change, 10 people have more than two people in a row, just to be standard bearers. How many people are there in this honor guard? (3 points)
6:6、 12、 18、24、30、36、42、48、54
8:8、 16、24、32、40、48、56、64
48+ 1 = 49 (person)
A: At least 49 people.
5. For a project, it takes 12 hour for Party A to do it alone, and 10 hour for Party B to do it alone. After three hours of cooperation, how many parts of the project have not been completed? (4 points)
12+ 10 = 22 (hours)
22÷2+ 1 1 (hours)
3÷ 1 1=3/ 1 1
1-3/ 1 1=8/ 1 1
A: There are still 8/ 1 1 unfinished.
6. Swimming pool, 25m long,15m wide and 2m deep. How many square bricks with an area of 4dm2 are needed to paste the four walls and the bottom? (4 points)
25× 15+(25×2+ 15×2)×2 = 535(m3)= 535000(dm3)
535000 ÷ 4 = 133750 (block)
A: It needs 133750 yuan.
Sorry, the fifth question cannot be displayed, and there are other questions that cannot be displayed. Please forgive me! I made it all myself.