People's education printing plate elementary school fourth grade mathematics midterm examination questions one
First, calculation. (28 points)
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? four
Two. Fill in the blanks (65438+ 0 points for each blank, ***20 points)
4. Rewrite 499000000 as? Billion? The number of units is (), and rounding to 100 million is ().
5.35m2 = () square decimeter10t = () kg.
5 liters = () ml
6. when b.c is not equal to 0, a? b？ c=a？ ( )
7. In a right triangle, one acute angle is 550 and the other acute angle is ().
8. According to the sum of the interior angles of the triangle, is it 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? , its vertex angle is ()? According to the angle, this is a () triangle.
10.(a+b)+c=a+(b+c) means that the algorithm is (), and the multiplication and division law is expressed 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 ().
Third, judge the question. (Right? , wrong number? ) (65438+ 0 points for each question, ***6 points)
14. The difference between the largest five digits and the smallest six digits is 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 the triangle is not less than 45? (The three angles are not equal to each other), this triangle must be an acute triangle. ( )
19. An isosceles triangle is an equilateral triangle. ( )
Fourth, multiple choice questions. (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. Which triangle has an unknown angle of 50 degrees?
A. BC
23. The following formula can be simply calculated by the law of multiplication and distribution ().
A.( 125+90? 8 B.52？ 25? 4 C.76 X 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
Five, solve practical problems (4 points per question, ***28 points)
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?
People's Education Press Elementary School Grade Four Mathematics Mid-term Exam 2
First,? Careful and meticulous? Fill it out. 20%
1, 6 m 3 cm = () m 4.04 m2 = () square decimeter.
7.5 tons = () kg 58 km 7 m = () km
2. When calculating decimal addition and subtraction, you must first align the decimal point of each number, which is essentially alignment ().
3. what is it? b？ c=b？ (a？ C) the law used is ()
4.9.805 is a decimal place, the counting unit is, and the reserved integer is.
5. The base angle of an isosceles triangle is 80? Its vertex angle is ().
6. Move the decimal point of 10.36 to the left by two places, and enlarge it by 10 times, and it will be (). After moving the decimal point of 10.3 to (), it is 0. 103.
7. Is it 180 according to the sum of the interior angles of the triangle? Find the sum of the internal angles of the following two figures.
Trapezoidal () degree, pentagonal () degree.
8. The decimal part of a number has two decimal places. When rounding to one decimal place, the approximate value is 5.0. The original minimum value of this number is (), and the maximum value is ().
9. Uncle Li sawed a piece of wood into two sections in 10 minutes, and then sawed it into nine sections in () minutes.
10, 20 tortoises and 56 legs. Among them are () cranes and () turtles.
Second,? Eye of fire? Distinguish between true and false. 5%
Multiply l, 0 and any number to get 0, and divide 0 by any number to get 0. ( )
2. If a triangle has two acute angles, it must be an acute triangle. ( )
3 、( 12+K)？ 5=60+5? k .( )
4.0.58 and 0.580 are equal in size and counting units. ? ( )
Both sides of a triangle are 2cm, and its third side is at least 4cm. ( )
Third, choose carefully and choose correctly. (Fill in serial number) 5%
1, if a? B=0, then ()
A, A must be 0 B, B must be 0 C, A and B are both 0.
2. Little monkeys should enclose a piece of land, and the method of () is stronger.
A, B, C,
In 3.8.306, the counting unit of the digit where 0 is located is ().
One tenth of A and B, one percent of C, one thousandth.
4. The number closest to 10 in the following figures is ().
a、9.98 B、 10. 10 1 C、 10.05
5. In division with remainder, the following statement is incorrect ().
First, dividends? Quotient = divisor remainder
B, (dividend-quotient)? Frequency divider = remainder
C. divisor? Quotient+remainder = dividend
Fourth, be patient, meticulous and careful. 34%( 10+6+ 18)
1, a number written directly.
88? 22= 1 1.7+3= 25? 40= 3.03- 1.9= 7? 19+7=
8? 125= 2.5+5= 900? 30= 10-0.03= 15-7.5-2.5=
2. Vertical calculation.
12.68-6.7= 4.86+6.34=
Check calculation:
6. Calculate the following questions as simply as possible.
3200? 25? 4 3.27+6.4+2.73+4.6
99+99? 99 300-2730? 9 1-70
1600? 25? 4 720? [(42-39)? 26]
Fifth, think seriously and solve problems. 24%(4+5+5+5+5+5)
1. School football cost 3 1.32, basketball cost 58.68, and Miss Wang brought 100. How much is left?
2. The heights of volleyball players in bright primary school are 160cm, 144cm, 148cm, 156cm and 152cm respectively. What is the average height of players? Is it appropriate to make school uniforms according to this average height?
The road team built a road, which was 3.4 kilometers on the first day, 0.6 kilometers more than the second day. How many kilometers were built in two days?
4. Has the zoo been launched? A day trip? Activity price of two schemes:
Option 1: 150 yuan/adult; Every child, 60 yuan,
Scheme 2: More than 5 people (including 5 people), each person 100 yuan.
Now there are four adults and six children to play. Think about how to buy tickets to save money.
5. The following is the statistics of students from Class 4 (1) and Class 4 (2) in Blue Sky Primary School who participated in extracurricular activities.
(1) How many people join the English group? ② What other math questions can you ask? (and answers)
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