1. A book has 100 pages. How many pages have you read? I think so: Yes, I have read (), that is, I regard () as the unit of "1", and how many pages I have read is the number of ().
2. The sum of the reciprocal of two natural numbers is () and () respectively.
3. Hours = () minutes, and kilograms = () grams.
4. The reciprocal of the smallest prime number is (), and the reciprocal of 0.25 is ().
5、 ×( )= ×( )= -( )=( )×0.3= 1
6. Divide 5 kilograms of sugar into 6 bags, each bag weighs () () kilograms, and each bag is 5 kilograms of sugar () ().
7. The position where Li Ming is sitting in the classroom is column 4, line 1, which can be represented by (4, 1). If you use numbers to indicate where you are sitting in the classroom, it is ().
8. In the same circle, both radius and diameter have (), the length of radius is () of diameter, and the ratio of diameter to radius is ().
9. The circumference of Xiaoming's round desktop is 376.8 cm, and the diameter of this round desktop is () cm.
10、65 = 18:( )=( ):20=( )25 =( )÷40
Second, multiple-choice questions: (5 points)
The reciprocal of 1 and () must be greater than 1.
A, false score b, arbitrary number c, true score
2. I bought 100 Jin of rice in the canteen, and after eating it, I still have' () Jin left.
a、99 B、20 C、80
3. "Divide the hectare of land into two pieces on average. How many hectares per block? " The following statement is wrong ().
A, that's how many hectares do you want? B, that is, divide six hectares into two parts. C, that is, dividing six hectares into two parts.
4. The diameter of the circle is equal to the side length of the square, and the area of this circle () the area of the square.
A is equal to B, greater than C and less than C.
5. As shown in the figure, the perimeter of a semicircle () is the sum of the perimeters of two small semicircles.
a 、= B 、& gtc 、& lt
Third, the calculation question: 30
1, a number written directly. (65438+ 0 point for each question)
1÷ = ÷2= ×4= 1.25×8=
2.5×4= - × = ÷ = 9÷ =
×3= 12× = × = ÷9=
2. It is simple and convenient to use. (2 points for each question)
24× × ×2 1 17× + 17÷ 18×( +6÷ )
÷[ -( - )] ( + + )×48 1 + ×
3, solve the equation (3 points per question)
235 x- 17 = 1(45+3.2)x = 23
Fourth, graphic questions
1, find the area of each circle or ring below. (12 points) ① ②
③ ④
2. Find the area of the shaded part on the right; (4 points)
Verb (abbreviation for verb) solves problems: (24 points)
1. Runfa Supermarket sells beer. The ratio of the number of boxes sold in August to that sold in July is 4: 5. 180 cases sold in August. How many cases were sold in July?
2. The price of a certain brand TV set is 1500 yuan, which is now on sale. How much is it now?
Xiao Qiang read a science and technology book. On the first day, he read 20 pages, and the next day, he read 25 pages, which happened to be the whole book. How many pages are there in this science book?
4. A pile of sand has removed the total tonnage, and the rest is 2. 1 ton more than that removed. How many tons is this pile of sand?
Li Ming collected 40 stamps. Wang Hong collects more stamps than Li Ming. How many stamps has Wang Hong collected?
6. The three vertices A, B and C of a triangle are represented by number pairs, namely (3,6), (6,8) and (2,8).
(1) Please draw a triangle A'B'C' after translating the triangle down by 2 squares.
(2) At this point, the three vertices of the triangle are represented by number pairs, namely
a′(，)、B′(，)C′(，).
In the sixth grade of primary school, the first volume of mathematics midterm paper 2, fill in the blanks.
1, a circle has countless radii, and all of them are ().
2. The circumference of a circle is () times the diameter.
3. The number less than 300 by 20% is ().
The minute hand of the wall clock is 5cm long, and its tip is () cm.
Class 5.6 (1) has 29 boys and 2 girls, accounting for ()% of the class.
6.A is 40, B is 80, and A is ()% of B.
7. The radius of the circle is enlarged by 2 times, and the area is enlarged by () times. .
8. If the number A is 5 and the number B is 4, then the number A is ()% more than the number B. ..
9. Dissolve 5g of salt in 95g of water, accounting for ()% of salt water.
10, rectangle, square and circle are surrounded by iron wires with the same length, and the enclosed () area is the largest.
Grade six 1 1/class (1) has an attendance rate of 98% on a certain day, and there are 50 students in * * * class, and there are () people who are absent from class that day.
Second, I will choose: think twice before you act, and be careful of the trap. I believe you can do it!
1 and 100 are greater than 80 ().
A: 20%
25%
About 80%
2. Laugh and be naughty and go home together after school. After walking for a while, I smiled and said to Naughty: I have walked 40% of the whole journey, and Naughty said: I have walked 90% of the whole journey. () Go home first.
A. smile
B. naughty
C. uncertainty
3. The original price of a refrigerator is 2 100, and now it is 30% off. What's the current price? The formula is ().
A.2 100÷70%
B.2 100×70%
C.2 100×( 1-70%)
4. Draw a circle with a circumference of 18.84 cm, and the distance between the two feet of the compass should be () cm.
A.3
B.6
C.9
D. 12
5. The water consumption in September is 8% less than that in August, and the water consumption in September is that in August ().
A. 108%
B.92%
Eight percent
D. unable to judge
Third, please judge right and wrong.
1, in the same circle, the diameter is twice the radius. ( )
2. Put 10g salt into 10g water, and the weight of salt accounts for 10% of the weight of brine. ( )
If A is 20% bigger than B, B must be 20% smaller than A.. ( )
4. The areas of two circles with equal perimeters must also be equal. ( )
5. A commodity is 15% off, which means that this commodity is discounted by 15%. ( )
Fourth, solve the equation.
50%x+30%x=8
x-20%x= 40
Verb (abbreviation of verb) practical application. Let's experience the application of mathematics in life. Be careful, don't make mistakes. Read the questions several times before you do them.
1. There are 80 boys and 60 girls in grade six in Le Tong school. How many percent are girls less than boys?
2. The electricity consumption of schools in Le Tong 10 was 1200 kWh, which was 20% lower than that in September. What is the electricity consumption of schools in Le Tong in September?
3. The circumference of a circle is 12.56 meters, so what is the radius of this circle? How many square meters is the area?