What are the contents of the final examination paper of mathematics in the second volume of the fourth grade of Jiangsu Education Publishing House? The following is the final math test paper of grade 20 17 of Jiangsu Education Edition for your reference!
fill (up) a vacancy
1, in a right triangle,? 1=33o，？ 2=( )o
2. In an isosceles triangle, when the base angle is 25? , its vertex angle is () degrees, and it belongs to () triangle according to the angle; A triangle, its top angle is twice the bottom angle, the top angle is () degrees, and the bottom angle is () degrees. From an angle, it belongs to the () triangle.
3. The base angle of isosceles triangle is 55 degrees? Its vertex angle is ()
4. 20cm,10cm, 8cm,10cm. Choose three of them to form a triangle, and the circumference of this triangle is () cm.
5. Two identical right-angled trapeziums can be spelled into one () or one ().
6. An isosceles triangle, if one of its base angles is 35? , its' vertex angle is (? ); What if its vertex angle is 100? One of its base angles is (? )。
Second, right or wrong (6 points, 65438+ 0 point for each question)
1. An equilateral triangle must be an acute triangle. ( )
The maximum angle of a triangle cannot be less than 60 degrees. ( )
3. Translation and rotation only change the position and direction of the graph, but do not change the size of the graph. ( )
4. What is the sum of the internal angles of a Pentagon? 180? =900? ( )
5. The positions indicated by the number pair (4, x) and the number pair (4, y) are on the same line. ( )
6. In all calculations, it is easier to use a calculator. ( )
Three, multiple choice questions (4 points, 8 points for each question)
1. at 80□988? Out of 800,000, □ can be filled in ().
a、 1~4 B、5~9 C、0~4
2. The following is not axisymmetric graphics ()
A, isosceles triangle b, semicircle c, parallelogram
3. 100 grain of rice weighs about 400g, and 1 100 million grain of rice weighs about ().
A, 4 million grams B, 400,000 kilograms C, 40 tons
4. Which of the following groups can form a triangle ()
A.3cm, 5cm, 1 cm b.4cm,10cm, 7cm c.3cm, 3cm, 6cm.
5. The following chart is correct ()
A.
Fourth, the calculation problem (3 1 minute)
1. Write directly (5 points, 0.5 points for each question)
26? 20 = 650? 13= 35? 12= 14? 7? 2= 86+ 14? 3=
200? 8= 370? 30= 420? 28= 187+ 105= 87-(36+44)=
2. Use vertical calculation (8 points, 2 points for each question)
750? 46 = 403? 93= 185? 58 = 650? 60=
3. How to calculate simply? (18)
9+99+999+3 400-3 1- 124-45 203? 18
49? 24+24 16? 125? 15 27 1? 32-7 1? 32
Four, painting questions (4 points)
(1) Translate the triangle in the figure below by 5 squares to the right, and then by 6 squares downward. (2 points)
(2) Rotate the trapezoid in the figure below 90 degrees clockwise along point A .. (2 points)
Fifth, solve the problem. (***30 points)
1, the school bought 72 sets of desks (one desk and one chair), each desk 100 yuan, each chair 35 yuan. How much did it cost? (two solutions)
2. There are 250 chickens in a farm, the number of ducks is three times that of chickens, and the total number of chickens and ducks is 70 more than that of geese. How many geese are there?
3. The weight of two baskets of fruits is * * * 150kg, and the first basket is lighter than the second basket 10kg. How many kilograms are there in each basket?
The original rectangular garden of Red Sun Square is 40 meters long. Later, when it was expanded, the length was increased by 20 meters, resulting in an increase of 400 square meters. How many square meters does this garden cover now?
There is a rectangular experimental field in the school. If the length of this experimental field is increased by 5 or 8 meters, the area will be increased by 40 square meters. Do you know how many square meters the original experimental field was?