1. Oral calculation (65438+ 0 points for each question, ***8 points)
280×30= 20×450= 7× 1 10= 230×3=
800÷ 16= 900÷ 18= 420÷70= 600÷50=
2. Use vertical calculation. (2 points for each question, ***8 points)
56×238 320×90 609×32 800÷30
3. Simple calculation. (2 points for each question, *** 12 points)
68×55+45×68 30 1×55 125×32×25
127+56+73+244 392-88- 12 360÷ 15÷4
Second, (per grid 1 minute, ***20 points)
4. Rewrite 499,000,000 into a number () in the unit of "100 million" and round it to 100 million ().
5.35m2 = () square decimeter10t = () kg.
5 liters = () ml
6. When both b.c. are not equal to 0, a \b \c = a \u ().
7. In a right triangle, one acute angle is 550 and the other acute angle is ().
8. According to the fact that the sum of the internal angles of the triangle is 180, find the sum of the internal angles of the following two figures.
Trapezoidal () degree, pentagonal () degree.
9. The base angle of an isosceles triangle is 50 and the top angle is (). According to the angle, this is a () triangle.
10.(A+B)+C = A+(B+C) means that the algorithm is (), and the distribution law is represented by letters as ().
1 1. One coin weighs about 6 kilograms, ten thousand one-dollar coins weigh about () kilograms, and one hundred million coins weigh about () tons.
12.20 14 About 470,000 people in Jiangsu Province took the college entrance examination. The number of people taking the college entrance examination this time may be the most () and the least ().
13. Xiaoming is sitting in the fourth column and the fifth row of the class. Xiaohong's position is (3,2) and there is a number pair. She sits in row () and column ().
Three. (Mark "√" for the right and "×" for the wrong) (each question 1, 6 * * *).
14. And the smallest six digits are 1. ( )
15.35×(7×3)=35×7+35×3。 ( )
16. A triangle with three sides of 4cm.4cm.8cm is an isosceles triangle. ( )
17. A set of quadrangles with parallel opposite sides is a trapezoid. ( )
18. If the smallest angle in a triangle is not less than 45o (the three angles are not equal), then this triangle must be an acute triangle. ( )
19. An isosceles triangle is an equilateral triangle. ( )
Four. (65438+ 0 points for each question, ***6 points)
20. Two triangles with an acute angle of 60 degrees are ().
A. acute triangle B. obtuse triangle C. equilateral triangle
2 1. Which formula product must be less than 6000?
A.303×2 1 b . 3 18× 19 c . 298× 19
22. In which triangle is the degree of unknown angle 50?
A. BC
23. The following formula can be used to simply calculate the distribution law is ().
A.( 125+90×8b . 52×25×4c . 76× 125+24。
It took three minutes to saw a piece of wood into three pieces. It will take () minutes if this piece of wood is sawed into five sections.
A.5 B.6 C.7.5
Verb (abbreviation of verb) Measure and draw a picture (6 points for each question, *** 12 points).
25. Draw the height at the bottom of each figure below, then measure the height and fill in the brackets.
Height () cm, height () cm and height () mm.
26.
(1) Translates the triangle to the left by 5 squares.
(2) Rotate the parallelogram 90 counterclockwise around the O point.
(3) Draw the other half of the figure on the right to make it an axisymmetric figure.
Six, solve practical problems (4 points per question, ***28 points)
27. Look at the pictures.
First team
Second team
28. Li Ning read a 200-page story book, and read an average of 34 pages a day for the first five days. How many pages do you need to read every day after reading the remaining two days?
29. Aunt Li, Aunt Wang and her mother knitted a batch of Chinese knots, which were finished in just 28 days. Aunt Li compiles 18 on average every day, and Aunt Wang compiles 23 on average every day. How many Chinese knots are there in this batch? How many stitches does Aunt Wang knit than Aunt Li?
Grandpa Wang has a rectangular fish pond with a width of 50 meters. When the fish pond was expanded, the width increased by 20 meters, so the fish pond area increased by 1800 square meters. How many square meters was the original fish pond? Draw a picture first, then answer. )
3 1. The circumference of the isosceles trapezoid is 30 cm, and the upper and lower bottoms are 8 cm. 10cm respectively. How long is each waist?
32. Hong Hong is doing an experiment. She first poured 6 glasses of water into the glass jar, and then the glass jar filled with water weighed 2000 grams. She poured four glasses of water into a glass jar, and then the glass jar filled with water weighed 3200 grams. How many grams does this glass jar weigh?
33. Xiaoming from Obana starts from both ends of a bridge at the same time and shuttles back and forth between the two ends of the bridge. The speed of Xiaohua is 65 m/min, and that of Xiaoming is 70 m/min. Five minutes later, they met for the second time. How long is this bridge?