Children's papers will do well if they are reviewed. . .
Examination paper ★ 1. See the problem clearly and think skillfully. (***28 points)
1. Numbers written directly: (4 points)
37 + 27 = 23 - 16 = 0.32×99 + 0.32= 0.25= ( )( )
1- 56 = 13 + 14 = 25×0.07×4= 5 14 = ( )( )
2. Find the greatest common factor and the least common multiple of the following groups, write the greatest common factor of each group in () and the least common multiple of each group in []. (4 points)
8 and 12 1 1 and 33
( ) ( )
[ ] [ ]
3. Solving equations: (8 points)
X-56 = 56 8X = 4 X÷ 12.5 = 8 12.7+X = 15.7
3. Calculation of the following problems can be simplified. (12)
23 + 45 - 3 10 1 18 - ( 56 + 38 )
67 -( 1 1 14 - 12 ) 59 + 4 1 1 + 6 1 1 + 49
Proposition intention: This textbook mainly studies solving equations and addition and subtraction operations of different denominator fractions in calculation. Therefore, this topic mainly arranges the understanding equation, the addition and subtraction of fractions with different denominators and the corresponding simple calculation, and also interspersed with the addition, subtraction, multiplication and division of decimals to find the greatest common factor and the least common multiple. The main purpose of this topic is to examine students' mastery of the calculation content in this book, as well as their ability and consciousness of flexible calculation.
Second, think carefully and fill in the blanks carefully. (***27 points, except 1 1 question 3 points, the rest are 1 points every time. )
1 and 17 have the largest true score of () and the smallest false score of (). Adding a decimal unit like () to this false fraction is the smallest prime number.
★2. Xiaoming's position in the classroom is (5,3) right. She sits in column () and row (). Xiao Fang sits in front of Xiao Ming, with a (,) numbered pair.
3. Fill in the simplest score in ().
25 seconds = () minutes 30 cm = () meters 250 kg = () tons.
4. Fill in ">" < "=" in the box.
37 82 1 23 34 89 32 ★ 34 0.7499
5 、()÷8 = 12 16 = 3()=()& lt; Fill in decimals >
25th, 26th, 27th, 28th
16 16 28 32
★6. The number of gold medals won by China in previous Olympic Games is shown in the right table:
(Unit: Pieces)
The number of gold medals in the 27th Olympic Games is 26th () (), and the 28th Olympic Games is 27th () ().
7. Draw a circle with a compass with a circumference of 25. 12 cm. The distance between the two feet of the compass is () cm, and the area of the circle drawn is () cm 2.
★8. Square with decimeter, decimeter and decimeter side length (integer decimeter number) can be covered by rectangle with length 16 decimeter and width 12 decimeter.
9. The greatest common factor of natural numbers A and B is 1, and the least common multiple of A and B is ().
★ 10, a ×4 b +8 c ÷9 4, where a is ().
Proposition intention: The above fill-in-the-blank questions involve the following knowledge points: fractional unit (1), fixed position (2), approximate fraction (3), size of comparison fraction (4), basic properties of fraction and the relationship between fraction and division (5), finding the fraction and approximate fraction of a number (6) and finding the radius and area of a circle (6). It mainly examines students' mastery of these knowledge and their ability to comprehensively apply knowledge. The 2008 Beijing Olympic Games will be held soon. Question 6 is to create an Olympic atmosphere. Question 8 is to examine whether students have a deep understanding of "common factors"; 10 is to examine whether students can flexibly use the "backward deduction method" to find the value of the letter a.
1 1、
Proposition intention: This topic is the compound line chart in the statistical knowledge of this book, which mainly examines students' reading ability of compound line chart and data analysis ability, thus enhancing statistical concepts and cultivating statistical ability.
Third, choose carefully and choose the best among the best. (***5 points)
1, 5 meters long cloth made six pairs of children's trousers of the same size, and each pair of children's trousers was made of this cloth ().
A, 56m b, 16 C, who cares?
2, the first mathematician in the world to the value of pi accurate to six decimal places is ().
A, Liu Hui B, Zu Chongzhi C, Euclid
★3. This year's "National Day Seven-Day Holiday", Teacher Lu wants to take part in the "Two-Day Tour of Qiandao Lake". When will she go? How many different choices does Teacher Lu have? ( )
A, 5 kinds of B, 6 kinds of C, 4 kinds
★4. Among the scores on the right: 59,37, 1224,911,13,45, some () scores are greater than12.
a,3 B,4 C,2
★5. Which figure in the picture below has the longest circumference? ( )
One centimeter
One centimeter, one centimeter
A, square b, circle c, equilateral triangle
Proposition intention: 1 The question is to test students' understanding of the meaning of the score. Mainly considering that some students have a headache about this problem, they added some happy elements of "Who cares". There is a professor in America, who often has the option of "Who cares" in multiple-choice questions, so students are fascinated by the professor's class. I think we can try it during the exam to relax the students' nervous mood. The second question is to examine students' mathematical and cultural knowledge; The third question is to examine students' ability to solve real life problems through "discovering laws"; The fourth question is to examine students' ability to compare scores of different denominators in various ways; The fifth question is a comprehensive knowledge question, which examines students' mastery of graphic perimeter calculation, as well as symbol consciousness and algebraic ability.
Fourth, carefully scrutinize and judge right and wrong. (***5 points)
1, the equation is not necessarily an equation, but an equation must be an equation. ( )
2. In the same circle, the distance from the center of the circle to the circle is equal everywhere. ( )
★3. There are four simplest fractions with denominator of 8. ( )
1 kg of 4 and 34 is equal to 3 kg of 14. ( )
5. True scores are all less than 1, and false scores are all greater than 1. ( )
Proposition intention: This question mainly examines students' mastery of some important concepts in this book, including true and false fractions, radius of a circle, simplest fraction, meaning of fractions, equations and equations, and also examines students' judgment and reasoning ability and logical thinking ability.
★ 5. Use both hands and brains to think about operation. (65438+ 0 points for each question, ***5 points)
(At the bottom right, the side length of each square represents 1 decimeter. )
Proposition intention: This title is to determine the position and circle the comprehensive application questions of relevant knowledge, so that students can use their brains while doing it. The main purpose is to examine the students' mastery of how to determine the position with number pairs, draw the circle with compasses, draw the diameter, calculate the area of the circle, and their comprehensive ability to use knowledge.
Sixth, apply knowledge to solve problems. (Question 1 ~ 5, 5 points for each question; The sixth question scored 3 points, and the sixth question scored 5 points. )
★ 1, only the equation does not count:
① The circumference of a square is 14m. Xiaogang is 12 years old, younger than his father.
26 years old. How old is dad this year?
Solution: Suppose.
X meter
Both Xiao Lin and Xiao Jun go to the library to borrow books. Kobayashi comes every six days, and Xiaojun comes every eight days. If they meet in the library on July 1, when will they go to the library next time?
The students in Class 5 (3) all expressed their holiday wishes to their mothers on Mother's Day. Among them, 13 students sent flowers, 15 students gave their mother a sweet kiss, and the rest students sent homemade greeting cards. How many students in the class send homemade greeting cards?
4. An acrobat rides a unicycle on a suspended steel wire. The wheel diameter of a unicycle is 45 cm. From one end of the wire to the other, the wheel made a full 40 turns. How long is this suspended steel wire?
★5. Students must have been to KFC! The picture below shows the operation of two KFC restaurants at a certain moment. Please judge which restaurant is crowded at that moment by calculation.
Restaurant 1 Restaurant 2
8 meters 84 people 6 meters 36 people
8 meters
12m
Proposition intention: The above five questions mainly examine students' ability to solve practical problems by comprehensively applying what they have learned, further feel the value of mathematics and the close relationship between mathematics and life, further develop students' application consciousness, and cultivate students' ability to choose corresponding strategies according to the characteristics of practical problems. Problem 1, the equation solves practical problems and makes students realize the characteristics and value of the equation; Question 2, the application of the least common multiple in real life; The third topic, the meaning of score and the application of unit "1", is permeated with gratitude education; Question 4, the application of circumference calculation in real life; Question 5: Compare scores and put them in KFC to stimulate students' interest in solving problems.
★6. This question is multiple choice. Choose one of the questions A and B to answer, do both questions A and B, and only use the question A to score .. A gets 3 points, and B gets 5 points. (If you choose to do question B, the full score is 100. )
A.(3 points) Xiao Fang collected some stamps. He took out half of the stamps, gave them to Xiao Lin with 1, and kept 36 for himself. How many stamps are there in Xiao Fang?
B.(5 points) For a bottle of juice, 50 ml of the whole juice is missing after drinking half of it for the first time, and 25 ml of the remaining juice is added after drinking half of it for the second time. At this time, there is 125ml left in the bottle. How many milliliters is this bottle of juice?
Proposition intention: the biggest purpose of designing this question is to examine students' habit and ability of examining questions. Students who don't look at the questions start with two questions and can't get full marks; Students who don't read the questions carefully and incompletely may miss the whole volume 100 if they choose a question at will; Students who study the problem seriously have to make a wise choice: they can answer question B, and everyone is happy to get full marks; If you can't answer question B, choosing the second best question A is a strategy. This topic makes the math test more than just a math test.
Attached:
Reference answer
First, see the topic clearly and think skillfully.
1、57 , 12 ,32, 14 , 16 ,7 12 ,7,2 14 。
2、(4)[24]; ( 1 1) [33]。
3、x=53,x=0.5,x= 100,x=3。
4.518,76, 16 (simple calculation problem), 47,11(simple calculation problem).
Second, think carefully and fill in the blanks carefully.
1、 67 ,77 ,7 。
2、5,3,(5,2) 。
3、 14 ,3 10 , 14 。
4、gt; ,& lt,& lt,& gt。
5、6,4,0.75 。
6、74 ,87 。
7、4, 50.24 。
8、 1,2,4 。
9、ab .
10、7 。
1 1, (1) 90,80 (2) 200, 150 (3) Wang Gang Li Fang.
Third, choose carefully and choose the best among the best.
Ethyl-ethyl-ethyl-armour
Fourth, carefully scrutinize and judge right and wrong.
√,√,×,√,×
Fifth, use both hands and brains to operate thinking.
( 1)、 ( 1,3)
(2)、 (4,4)
(3) and (4) are omitted
(5) 28.26
Sixth, apply knowledge to solve problems.
1, 4X= 14 or 14÷X=4 Suppose dad is x years old this year. X- 26= 12 or X- 12 =26.
2. July 25th.
3、7 15 。
4, 56.52 meters. 5. 1 Restaurant is very crowded.
Method A (compare the average number of people per square meter) Method B: (compare the per capita floor space)
Restaurant 1: 84÷(8× 12)= 78 (person) 8× 12÷84 = 87 (square meter)
Dining room 2: 36÷(6×8)=68 (person) 6×8÷36 = 86 (square meter)
78 people > 68 people, 87 square meters < 86 square meters
6,a,74。 B, 500 ml
Well, I hope it helps you. . get good results