The sixth grade first volume mathematics examination questions
I'll fill it in (20 points, 65438+ 0 points for each space).
1, draw a circle with a diameter of 8 cm, and the distance between two feet of the compass should be ().
2. calculation? (+), you should calculate () first and then (), and the result is ().
3. Cut off the largest circle in a square with a side length of 10 cm. The area of the circle is (), and the rest is ().
4. After the price reduction, the price of a refrigerator is 2 100 yuan, and the original price is () yuan.
5. When the radius of a circle is quadrupled, its circumference is enlarged by () times and its area is enlarged by () times.
6. A number is equal to 18, and the reciprocal of this number is ().
7. 1 contains () 1%, 27% of () is 135, and120m is 20% more than () m.
8、 =( )? 20= 25% =3? () = () (Fill in decimals)
9, inspection of a batch of parts, 485 qualified, 15 unqualified, the qualified rate of this batch of parts is ().
10, 16 kg is the increased () kg, and 16 kg is the increased () kg.
Second, I will choose (5 points, 65438+ 0 points for each question).
1, () determines the position of the circle and () determines the size of the circle. A, pi b, radius c, center of the circle
There is a path in the park. Xiaoming has finished the whole journey, and there are still 200 meters left. This path is () meters long.
A, B, C, 600
3. Walking under the street lamp, the shadow will () when walking towards the street lamp.
A, long b, short c, uncertain
4. Among the following figures, the figure with the least symmetry axis is (). A, rectangle B, square C, circle 5, the qualified rate of parts can't be ().
a、80% B、 100% C、 10 1%
Three, I am a small judge (5 points, 65438+ 0 points for each question)
1, two semicircles can make a circle. () 2 2. 10/0g salt is dissolved in100g water, and salt accounts for brine. () 3, 1 1% has the same meaning and the same pronunciation. () 4. A circle with a radius of 3 decimeters is larger than a circle with a diameter of 5 decimeters. ( )
A pile of coal has been transported away, and there are still a few tons left. ( )
Fourth, I can calculate (39 points)
1, learned the number directly (8 points)
3? =25% ? 4= 1- -0.8= 3? =
8+0.8= ? = ? 6 ? 5= ? =
2, off-type calculation, can be simplified (9 points)
( + )? 24? ( - - )36? +36? 37.5%
3, solve the equation (9 points)
5.2+40% x = 7.6+25% x = 175% 76% x-2 1% x = 1 10
Five, I will solve (25 points)
1, a circular flower bed with a diameter of 20 meters, how many square meters does it cover? (5 points)
There are 56 boys and 40 girls in grade six in our school. How many points are boys more than girls? (5 points)
3.3000 kilograms of pears came from the trade market, and they were sold for 40%. How many kilograms are left? (5 points)
4. Naughty bag used 0/4 ton of water in August, more than in September. How many tons of water were used in September? (5 points)
5. A rope with a length of12.56m is just around a tree trunk 10. What is the cross-sectional diameter of the trunk? (5 points)
The answer to the first volume of the sixth grade mathematics examination questions
I'll fill in (20 points)
1, 4cm2, addition, multiplication, 78.5cm, 21.5cm.
4、2400 5、4, 16 6、 7、 100,500, 100 8、2,5, 12,0.25,
9、97% 10、24, 16
Second, I will choose (5 points, 65438+ 0 points for each question).
1、C、B 2、A 3、B 4、A 5、C
Three, I am a small judge (5 points, 65438+ 0 points for each question)
1、? 2、? 3、? 4、? 5、?
Fourth, I can calculate (39 points)
1, learned the number directly (8 points)
4 、 1 0 、 9.42、 8.8、 、 18、
2, off-type calculation, can be simplified (9 points)
2 、 5 、 36
3, solve the equation (9 points)
x=6、x=4、x=200
4, column calculation (6 points)
, 90 kg
5, find the area of the shadow part (3 points)
3. 14? 52-3. 14? 42=28.26 (square centimeter)
6. Find the circumference of the picture below (4 points)
6? 3+3. 14? 6? 2=27.42 (decimeter)
Five, I can operate (6 points)
leave out
Six, I'll solve it.
1, solution: radius: 20? 2= 10 (m) (2 minutes) Area: 3. 14? 102 = 3 14m2 (2 points)
A: Its area is 3 14 square meters. ( 1)
2. Solution: (56-40)? 40 = (4 points)
There are more boys than girls. ( 1)
3. Solution: 1-40%=60%( 2 points) 3000? 60%= 1800 (kg) (2 points)
A: There is still 1800 kg left. ( 1)
4. Solution: 14? (1+ )= 12 (ton) (4 points)
A: There are 12 tons left. (1) new curriculum standard-net first
5. Solution: Outside line: 12.56? 10 =1.256m (2 points)
Diameter: 1.256? 3.14 = 0.4m (2min) Answer: the diameter is 0.4m. (1).
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