1. The milk powder bag is marked with the net weight of "500g 5g", and the standard weight of the milk powder is () g, with the maximum weight not exceeding () g and the minimum weight not lower than () g. ..
2. One natural number is m, and two adjacent natural numbers are () and (). If the sum of these three natural numbers is
96, then these three natural numbers are (
), () and ().
Xiaohong is x years old this year, and Teacher Wang is four times as old as Xiaohong. Teacher Wang is () years old this year. If Teacher Wang is 33 years older than Xiaohong, Xiaohong is () years old this year, and Teacher Wang is (
) years old.
4. Xiaoming's father's ID number is "6401221968100624151",which means Xiaoming's father was born in () (
) The day you were born.
5. The area of a triangle is 7.5 square centimeters, and the area of a parallelogram with equal base and equal height is (). 6. Among the five numbers of 0.3, 0.33 and 0.33, ..., 34%, () is the largest, () is the smallest, () and () are equal. 7. Added to it is (
), 2.5% after removing the percent sign, the exhibition will be opened to () times.
8. Miss Li won the prize in 240 yuan, including 50 in 2 yuan, 50 in 5 yuan and 50 in 10 yuan, and as many in 2 yuan and 5 yuan, so 10 yuan has ().
9. Divide a circle into several parts and make it into an approximate rectangle. The circumference of a rectangle is 8 cm longer than that of a circle, and the area of the circle is () square centimeters.
10. When the ratio of three sides of a triangle is 5: 4: 3, the corresponding ratio of three heights is (
):( ):( )。
1 1. Xiaoming stayed in Helan No.1 Middle School. He spent this month's living expenses in the first week and the rest in the second week. If this month's living expenses are regarded as "1", after the first week (), what is spent in the second week (), and what is spent in the second week?
All (
)。 From this point of view, the first two weeks spent all (
)。
2. True or false questions: (65438+ 0 points for each question, ***5 points)
1. The ratio of the perimeter of the great circle to the small circle is 3: 2, and the ratio of the area of the great circle to the small circle is 9: 4. () In 2.2: 3, if the former item is added with 2, the latter item should be added with 3, keeping the proportion unchanged. () 3.40 kg of rice, 50% has been eaten, and the rest is as much as the food. (
)
4. The ring is an axisymmetric figure with only one axis of symmetry. (
)
5. Throw a coin up 100 times at will, and the ratio of positive and negative times after landing is close to 1: 1.
(
)
3. Multiple choice questions: (65438+ 0 points for each question, ***5 points)
1. If the number of boys and girls in Helan No.2 Primary School is equal, the number of girls accounts for ()
A. B, C,
2. Make a circle and a square with two iron wires of 62.8 decimeters, and the area of () is larger. A. the square
They are the same size.
Xiaoming's father's monthly salary is 2000 yuan, and his mother's monthly salary is 1000 yuan. Yesterday, he bought a washing machine at home.
Machine, dad
Dad takes out his monthly salary, and mom takes out her monthly salary. () How much did he withdraw?
A. Dad
B. Mom C. Equality
4. If
B, greater than b and less than c
C, less than
5. The product of two numbers between and in each group below is (). A. x b, x c and 7 x iv. Calculation problem: (***30 points) 1. Number written directly: (5 points) (1) ÷3=
(2) 10÷ 10%=
(3) ÷ =
(4) × ÷ × = (5) ×(0.4- )=
2. Calculate the following questions (simplify them if possible) (10 score)
( 1) ×58+42÷8 (2)36×( + - ) (3) ÷ - ÷
(4)( 15- 14× )× (5)( ×29+ ×29)×
3. Solving equations: (6 points)
( 1)4X+5X = 135(2)X-0.25 = 0.25
(3)(X-6)×( 1+40%)=56
4. Column calculation. (6 points)
The sum of (1) is equal to a number. What's this number? (2) If a number is 2 more than 36, find this number. (Equation solving)
5. Look at the picture: (3 points)
As shown on the right, on each side of a square, the four corners of the square are cut off at two points where three sides are equal. What is the area ratio of the cut part to the rest?
Verb (abbreviation of verb) problem solving: (1 question 4 points, other questions 5 points, ***24 points)
1. In a math class, Teacher Gui showed a square cardboard, and asked the students to cut out a circle with the largest area from the square cardboard, and then asked the students to discuss the ratio of the area of this circle to the area of the original square. What is the ratio of circumference? Students, do you want to try?
2. Helan No.2 Primary School started the "Sunshine Sports Project". There are 34 students playing table tennis on the 12 table tennis table in the school playground. How many tables are there for singles and doubles?
3. In a construction site of Desheng Industrial Park, three trucks used 9 10 tons of cement, the first truck used 30 tons more than the second truck, and the third truck used 20 tons less than the second truck. How many tons are transported by each truck?
After the mid-term exam, the school should reward students with excellent academic performance and plan to buy pencil boxes of different grades. Among them, 5 are high-grade, 75% are middle-grade and 75% are low-grade. Do you know how many pencil cases the school will buy?
On Sunday, the calf and his father went to the South Temple. There is only one way from this mountain to that one. They reached the top of the mountain by car at a speed of 30 kilometers per hour. When they came back, they still took the bus and returned to their original place at a speed of 60 kilometers per hour. What is the average speed that this car violates?
Six, hands-on exercises: (3 points for each question, ***6 points)
1. Please draw a semicircle with a diameter of 2 cm first, and then divide this semicircle into three parts equally. Please draw an equilateral triangle, and then draw the largest circle in this equilateral triangle.