1. Translation only changes the (position) of the graph, not the (size and shape) of the graph.
2.( 16 )/20 =4÷5=36/( 45 ) = 12÷( 15 )=( 0.8 )÷ 1
3.2009.8 cubic centimeter =( 20.098) cubic decimeter 1 liter 600 ml =( 1.6) liter.
4. In 1-20, the prime number is (2, 3, 5, 7, 1 1, 13, 17, 19 * * 8), and the even number is.
5. A number is both a multiple of 12 and a factor of 12. This number is (12).
The greatest common factor of 6. 5 and 7 are (1), and the greatest common factor of 27 and 18 is (9).
7. A refrigerator is 0.5m long, 0.4m wide and 1.5m high. The sum of its sides is (9.6m), its surface area is (3. 1) m2 and its volume is (0.3) m3.
8. The side length, surface area and volume of the cube have been expanded by 3 times, 9 times and 27 times respectively.
9.7/ 16 plus (9)116, and the score is1; 7/ 16 minus (3)116, the score is 1/4.
10. Put ">" in ○. "<" or "=".
69 & lt 10 15 57 & lt； 58 7 12 >56 35 & lt 10 15
1 1. Divide 2kg of biscuits to five children equally, and give each child (2/5) kilograms of biscuits and each child (1/5) these biscuits.
Four scores of 12. 3/5, 2/3, 0.65 and 4/7 are arranged from small to large. (4/7 & lt； 3/5 & lt； 0.65 & lt2/3 )
Second, let me make a judgment. (Tick √ for the right and × for the wrong) (6 points)
1. There are two cuboids. If their volumes are equal, their surface areas are equal. ( × )
Among the natural numbers within 2.20, there are two numbers that are both composite and odd. ( √ )
3. The sum of any two even numbers must be even. ( √ )
4. Cut a cube with a side length of 3cm into small cubes with a side length of 1cm, and a * * * can be cut into 9 pieces. ( × )
5. The least common multiple of two numbers must be greater than their greatest common factor. ( × )
6. If 6/a is a true score, A is at least 7, if b/6 is the minimum false score, B is at least 7. ( × )
Let me choose and put the correct answer in brackets. (*** 10 point)
1. In the figure below, the one that does not rotate is ().
2. The simplest score below is (C)
a、B、C、7/30 D、
3. The score that is not equal to 3/4 is (D)
a、9/ 12 B、 18/24 C、6/8 D、 12/ 14
4. Using three cubes with a side length of 2cm to make a cuboid, the surface area is reduced (A).
A, 16 cm2 b, 8 cm2 c, 12 cm2 d, 4 cm2
5, a rope is divided into three times, then the length of each rope is the total length (C)
a、 1/3 B、 1/6 C、 1/8 D、 1/9
6, can be divisible by 2, 3, 5 at the same time the largest three digits is (D)
a、999 B、996 C、900 D、990
Among the prime numbers within 7 and 20, the sum of two prime numbers also has group (C).
a、2 B、3 C、4 D、5
8. To make 12 10 divisible by 3, at least add (b).
a、 1 B、2 C、3 D、4
9, can spell into a cube in the following figure is ()
10, the following statement is correct (c)
A. all odd numbers are prime numbers. All multiples of b and 5 are composite numbers.
C, odd numbers are not multiples of 2. Natural numbers are either prime numbers or composite numbers.
Four, practice and operation problems (24 points)
1, draw the figure that triangle ABC rotates 900 clockwise around point C. (3 o'clock)
2. Design beautiful patterns through axisymmetric transformation. (3 points)
6 3 4 12 28 29 30 36 48 57 60 9 1
The prime number is: 3 29
The multiple of 3 is: 6 3 12 30 36 48 57 60.
The common multiples of 4 and 6 are: 12 36 48 60.
Numbers with a divisor of 2: 6 4 12 28 30 36 48 60.
4. Find the surface area or volume of the following figure. ( 10, 4+6)
Find the volume of this trash can. The sum of the sides of the birdcage is 48 dm, so find the surface area and volume.
48/ 12=4 4*4*6=96 square decimeter 4*4*4=64 cubic decimeter.
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