1 is both a multiple of 6 and a factor of 54. The number may be ().
A 6 B 9 C 27 D 30
The solution of 2 6x-x = 5 equation is ().
A x= B x = 1 C x=2 D x=
There are () scores between 3 and.
A 1 B 2 C 3 D is countless.
Teacher Zhu goes from the first floor to the fifth floor, so the time from the first floor to the second floor accounts for ()
A B C D
5 Press a square into a parallelogram with an area of ().
A gets bigger, B stays the same, and C gets smaller. None of the above answers are correct.
6 trapezoid, with an area of 12.6㎡, a height of 3m, a bottom twice that of the upper bottom, and an upper bottom of () m..
a 2. 1 B 2 C 1.4D 1.2
Fill in the blanks (3 points for each question, *** 15 points. )
1 Class 5 (1) has one person, and Class 5 (2) is 1 .2 times that of Class 5 (1), so A+1.2a is ().
2. Observing a cuboid from one position can see at most () faces and at least () faces.
3. If all three sides of a right triangle are 6 810, then the area of the triangle is (). The height of the hypotenuse is ()
4. Two non-zero factors, one factor is unchanged and the other is expanded to 30 times, so the product () If one factor is expanded to 5 times and the other is expanded to 4 times, the product ().
There are 8 bottles of drinks, 2 of which have expired. Take a bottle casually, and the possibility of getting an unexpired drink is ().
Three. Judgment (*** 10)
1. Multiply two numbers less than 1, and the product must be less than any factor ().
A multiple of 2. 2 must be an even number. ( )
3. Two triangles can be combined into a parallelogram. ( )
4.5.994 The two decimal places reserved are 6.00. ( )
5. 1 kg iron is as big as 2 kg cotton ()
Four. calculate
1 direct write number (***5 points)
8×0.4= 2.2÷0.22= 3.6÷9= 2.22×0.3=
2.5× 16= 1.06×5= 2. 15×4= 4.2÷0.6=
6.3÷0.07= 0.52×0.2 1=
2 Comparative size (***6 points)
O O O0.25
0.45 euro O0.3 euro
3. Find the greatest common factor and the smallest common multiple. (6 points)
12 and 18 28 and 7 8 and 20
Maximum common factor:
Least common multiple:
4. Solve the equation (***6 points)
2x÷0.3 = 2 5x-2x=6
5. Solving problems (5 points for each of the first four questions and 7 points for each of the last two questions)
1. trapezoidal vegetable field, with an upper bottom of 7 meters, a lower bottom of 5.5 meters and a height of 5 meters. This year, 400 kilograms of vegetables were harvested, so how many kilograms of vegetables were harvested per square meter?
2. Xiaoming's refrigerator uses 0.08 kWh per hour, so how much kWh does this refrigerator use in January? (30 days a month)
The fifth grade classroom is 8 meters long. If the width is very long, what is the circumference of the fifth grade classroom? What is the area?
4. A car travels 192KM in the first 3 hours and 58KM in the last 2 hours. What is the average speed of this car?
5. Liu Ye read an extra-curricular book. On the first day, he read it the next day. How many books are there left to read?
6. Xiaohua bought a pen with half the money she brought, and 2.5 yuan bought a box of yogurt. At this time, he still has 15 yuan. How much money does Xiaoming have?