Beijing normal university printing plate fourth grade primary school mathematics final examination paper volume 21i. fill in the blanks. (65438+ 0 points per grid, 30 points)
1,. 1? The average share is 1000, one of which is (), which can also be expressed as (). 2. 18.049 consists of 1 (), 8 (), 4 () and 9 (), and its counting unit is ().
3, 2.5 is 250 times the original (), and 68 is 0.068 times the original ().
4, to the store to buy a pencil, each 0.5 yuan, a * * * need () yuan.
5. Nine ones, three percent and four thousandths are ().
6、3.9? The product of 0.4 must be greater than 3.9 (), 4.5? The product of 2.2 must be greater than 4.5 (). 7、0.874? The product of 0.22 is () digits after decimal point.
8. There are x kilograms of pears, 2.5 times of apples, () kilograms of apples, and () kilograms of pears and apples.
9. Xiaogang bought X pencils with 20 yuan money, each 3.6 yuan, and there was () yuan left.
10, and the multiplication distribution rate in letters is ().
1 1, the difference between a and b is twice ().
12、7.56? 5.4=40.824, then 756? 5.4=( )
13, (1) In a triangle, there is an angle with a degree of 90 degrees, which is a triangle.
(2) If the degrees of two angles are the same, it is a triangle.
(3) If one of the angles is 130 degrees, it is a triangle.
14, a big triangle is cut into two small triangles, and the sum of the internal angles of each small triangle is () degrees.
15. The base angle of an isosceles triangle is 45 degrees, and the top angle is () degrees, which is also a triangle ().
16, the lengths of two sticks are 5cm and 10cm respectively, and the other stick with () cm can form a triangle. (Fill in whole centimeters).
17, 2kg 40g = () g 0.8h = () min.
5 square decimeter = () square meters
Second, please be a small referee. (5 points)
1、3? 2+8=2x is an equation. ( )
The decimal between 2.5.64 and 5.66 is only 5.65. ()
3, 0.75 expansion 10 times is equal to 750 reduction 10 times. ( )
Three ropes of 4.3 cm, 4 cm and 5 cm cannot form a triangle. ( )
5. When both sides of the equation are multiplied or divided by a number (except 0), the equation is still valid. ( )
Third, choose one. (7 points)
1, the two internal angles of a triangle are 25 degrees and 64 degrees respectively, and this triangle is ().
Acute triangle b right triangle c obtuse triangle
2, in the following, () is an equation.
A 4a+8 B 6b-9 > 12 C a？ 3=9
3. Move the decimal point two places to the left and then three places to the right. This decimal (
A magnification 10 times, b reduction 10 times and c reduction 100 times.
4. The solution of equation 18-x=6 is ().
A x=24 B x=20 C x= 12
5, in the following categories, the smallest product is ()
A 0.5 1? 203 B 5. 1？ 2.03 C 0.05 1？ 20300
6. After reducing () to 1%, it is 0.528.
A 52.8 B 528 C 5.28
7. The number equal to 3.07 is ().
A 3.7 B 3.70 C 30.7 D 3.07。
Fourth, write numbers directly. (9 points)
5.8-4= 3.8+0. 12= 3. 1 ? 0.03=
0.25+0.75= 2. 1-2.0 1= 8-2.5=
3.7? 100 0.5? 10= 30? 1000=
V. Vertical calculation. (2 points for each question, 6 points)
9.32? 0.35 9.6+4.78 6. 18-2.7
Sixth, calculation. What can be simplified should be simplified. (10)
3.2? 4.7-7.8 16.75-3.43-0.57 0.46? 1.9+0.54? 1.9
12.5? 5.6? 0.8 18? ﹝0.3? (8-6.5)﹞
Seven, solve the equation. (10)
12x = 48 3x+3.6 = 7.89 4x- 12 = 8
5x-3.25？ 2= 18.5 X？ 0.8 = 4.5
Eight, solve the problem. (23 points)
1. A table is 8 1.5 yuan, which is more than three times the price of a chair. Five dollars. How much is a chair? (Equation solving)
2、? 1 、 ? 2 、 ? 3 is the three inner angles of a triangle.
( 1)? 1= 140 degrees? 2=25 degrees? three
(2)? 2=65 degrees? 3=73 degrees? 1
3. The school wants to ask the construction company to lay floor tiles for classrooms with a length of 10.8m and a width of 5m, and consulted two companies that sell the same quality floor tiles. Company A quotes 32 yuan per square meter. Company B's quotation is the total price 1890 yuan. Please help me figure out which company's floor tiles are cost-effective.
Aunt Wang bought a box of 15kg red Fuji apples at the wholesale market in 45 yuan. She took it to her shop and sold it at the price of 4.5 yuan per kilogram. How much did she earn after the box of apples was sold out?
5. Super girl Koharu got 9. 18 points from 6 judges and 9.25 points from 4 judges in the singing contest. What is her average score?
The final examination paper 1 of the fourth grade of primary school mathematics printed by Beijing Normal University, fill in the blanks. (per grid 1 min, ***2 1 min)
1. The first digit to the right of the decimal point is (), the third digit is (), and the second digit to the left of the decimal point is ().
2. The decimal consisting of 6 ones, 6 tenths, 7 percents and 1 thousandth is ().
3. According to the angle, triangles can be divided into () triangle, () triangle and () triangle.
4.0.9 includes () 0. 1, and 0.78 includes () 0.0 1.
5. A construction site uses trucks to transport soil, and each truck transports X tons, 25 in the morning and 20 in the afternoon. This construction site transports () tons of soil in the morning and () tons during the day.
6. Xiaoming's height is 1.28 cm, and the decimal is () meters.
7. 120cm=( )m 3 yuan 6 points = () yuan.
8. () and () are special parallelograms.
9. The minimum number of decimal places is ().
10. The calculation of decimal addition and subtraction is the same as that of integer addition and subtraction, that is, the same numbers are aligned, that is, put
( )。
1 1. The sum of the internal angles of acute triangle, right triangle and obtuse triangle is ().
12. An isosceles triangle with a base angle of 50? Its vertex angle is (), the side length of an equilateral triangle is 9 cm, and its circumference is () cm.
Second, judge right or wrong. (Correct type), 2 points will be deducted for each error type. *** 1 2 points)
1, decimal must be greater than integer. ( )
2. Any triangle has at least two acute angles. ( )
3. Add 0 or delete 0 after the decimal point, and the decimal size remains unchanged. ( )
4、 12+7X & gt； 8 is an equation. ( )
5. When calculating decimal addition and subtraction, align the last decimal place. ( )
6. Two groups of opposite sides of parallelogram are parallel respectively.
Third, choose to fill in the blanks. (Fill in the serial number of the correct answer in brackets, 2 points for each small question, *** 12 points)
1. The integer part is two decimal places of 0, and the largest is ().
a、0 .0 1 B、0。 09 degrees Celsius. 9 days, 0.99.
2. The maximum counting unit of fractional part is ().
A, 1 B, one tenth of c, one percent.
3. The decimal rate between every two adjacent units is ().
One, one B, one C and one hundred.
All equilateral triangles are () triangles.
A, obtuse angle b, acute angle c, right angle
Comparison between 5.8.7 and 8.70 ()
One, different sizes, the same counting unit
B, the size is equal, the same counting unit.
C, equal size, different counting units
6. The two sides of the triangle are 40 cm and 50 cm respectively, and the length of the third side can only be selected (
a，80cm b，90cm c， 1 10cm
Fourth, the operation problem is 6 points.
1. Draw an obtuse triangle and a parallelogram on the point diagram.
?
?
?
?
?
Beijing normal university printing plate primary school mathematics fourth grade volume final examination paper 3 1. Fill in the blanks. 25 points
1)7 150g =()Kg 42min =() 1m 5cm =()m2)320？ The commercial rounding method of 33 reserves two decimal places, which is about (). 3) The counting unit of 0.4 is (); 6.025 includes () 0.00 1.
4) The sum of the largest single digit and the smallest decimal digit is (), the difference is (), and the product is ().
5) Arrange the following figures in order.
The periods are 1.72,1.72,72, 1.702, 1.727 ().
6) Choose three sticks with the length of 1.5cm, 2cm, 3.5cm and 4cm to form a triangle, and the sides of this triangle may be (), () and ().
7) The two internal angles of the triangle are 92 degrees and 44 degrees respectively, and the third internal angle is () degrees. This triangle is a () angle triangle composed of angles and a () triangle composed of sides.
8) Move the decimal point of a decimal to the right by one place, which is 25.2 more than the original. The original decimal point was ().
9) A three-digit decimal is about 2. 10 after rounding. The smallest decimal is () and the largest decimal is ().
10)□0.□7 Please fill in the numbers in □ to meet the following requirements respectively.
(1) Maximize this number. () (2) Make this number closest to 3 1. ( )
Choose the letter of the correct answer and fill in the brackets. 5 points
1) has () decimals greater than 3.5 and less than 3.7.
A, 0 B, 1 C, 9 D, countless
2) If the lengths of two sides of a triangle are 5cm and 8cm respectively, the length range of the third side should be ().
A, 3cm above b, 13cm above
C, more than 3cm and less than 13cm d, less than 3cm or more than 13cm.
3) The product of two numbers is 0.42. If two numbers are simultaneously expanded by 10 times, the product is ().
a、42 B、4.2 C、0.42 D、0.0042
4) A steel pipe is 3.8 meters long and sawed into sections every 0.7 meters. How many meters are left in the steel pipe? ( )
a，30m b，3m c，0.3m d，0.03m
5)0.6? 4 means:
How much is six tenths of a plus four? How much is b? What is 0.6 4? How much is C? What is the sum of 4 0.6?
Third, calculation:
1, write directly. 5 points
0. 15+0.5= 0.2? 0. 1= 1.8? 6= 1-0.23= 2.5? 4=
20? 0.5= 0.39? 3= 1.05? 5= 2. 16+3.84= 4.8? 1.6=
2. Calculation of the following problems can be simplified. 18 point
1) 12.7+ 12.5+0.5 2)2.5? 4.6? 0.4 3)5.4? 99+5.4
4) 68.8+ 1.2? 6.5 5)55.4? (3.94+6.86) 6)7.4? [5.6? (5.4? 0.9)]
3. Solving the equation: 12 points.
4X-7 = 2 1 4.5X+5.4 = 14.4
5.8X+3.5X-7 = 14.39 13.5-2X = 1.5
4. Xiaoming and Xiaolan play a model ball game, touching one ball at a time at random, and then putting it back, each touching 10 times. Xiao Ming who touches the white ball gets 1 point, Xiao Lan who touches the yellow ball gets 1 point, and Xiao Ming and Xiao Lan who touch other colors get no points. What kind of pocket do you think is fair to touch the ball? 6 points
Three white balls and three yellow balls.
1 red ball and 2 blue balls
Three white balls and two yellow balls.
1 white ball 1 yellow ball
Three red balls and two white balls.
1 yellow ball and 2 blue balls
Fifth, solve the problem. 1 to 4 questions, each with 5 points.
1) A butterfly flies 3.9 kilometers at a speed of 0.5, and the flying speed of bees is 2.4 times that of butterflies. How many kilometers do bees fly per hour?
2) There are two barrels of oil, one of which is 2.5 kilograms, and the price is 35.00 yuan; B 3kg barrel (0.5 kg of the same oil), the price is 48.30 yuan. What kind of oil is cheaper?
3) Students play guessing games. Xiaoling said: the number I want multiplied by 9 plus 6. 15 equals 15.87. ? Do you know what Xiaoling is thinking? (solved by equation method)
Dad is seven times as old as Lan Lan. I also know that light light blue is 30 years younger than his father. How old are Light Light Light and Dad?