1. Write directly. (8 points)
1.4× 100=
2.4÷ 100=
1-0.8=
0.32+ 1.98=
n×n=
9×99+9=
560÷8÷7=
27+27×0=
2. Use vertical calculation and check calculation. (6 points)
19.08+5.83 20-3. 18
3. Calculate, what can be simplified should be simplified. (18)
125× 17×8 35× 102 56×67+33×56
12.7+0.98+3.02+5.3 5.6- 1.7 1-0.29
24.52-(7.5+4.52)
Second, fill in. (per grid 1 min, ***2 1 min)
1. The circumference of an isosceles triangle with a base length of a㎝ and a waist length of b㎝ is () degrees.
2. One acute angle of a right triangle is 65, then the other acute angle is ().
A number consists of three tens, four tenths and five thousandths. This number is written as (), and two decimal places are reserved as ().
From 2 o'clock to 3 o'clock, the minute hand turned () degrees.
5.23 cm = () m 5 tons 80 kg = () tons
4 yuan 2.5 = () yuan 360 hectares = () square kilometers.
0.75m2 = () square decimeter 3.07km = () km () m.
6.2.07 is expanded to 1000 times (), and 54.3 is reduced to 1 100 times ().
7. As of May 26th, 20 10, the total number of people who entered the Expo Park through ticket checking was 6,059,400, and the number in "ten thousand" was () ten thousand, and the mantissa after omitting ten thousand was about () ten thousand.
8. In an isosceles triangle, when the base angle is 25, its top angle is () degrees, which belongs to the () triangle according to the angle; A triangle whose top angle is twice the bottom angle belongs to the () triangle according to its angle.
9. 1.96≈ () (accurate to the tenth place); 3.068≈ () (keep two decimal places).
Third, distinguish between eyes and eyes. (65438+ 0 points for each question, ***8 points)
1.(a+b)c = a+(bc)()
2. A triangle with an acute angle must be an acute triangle. ( )
3.2.7 and 2.700 have the same size and the same counting unit. ( )
4. After the 0 in1.0300 is removed, the size of the decimal remains unchanged. ( )
5. An isosceles triangle with an angle of 60 must be an equilateral triangle. ( )
There is only one decimal between 6. 3.5 and 3.7. ( )
7. The angle of15 should be 150 under the magnifying glass with magnification of 10. ( )
8. Right triangle, obtuse triangle and acute triangle all have three heights. ( )
Choose the serial number of the correct answer and fill in the brackets. (*** 12)
1. The circumference of a rectangle is c cm, the length is α cm, and the width is () cm.
a、C-2α B 、( C-α)÷2 C、C÷2α
2. 12.5 first reduced to the original 1 100, and then expanded to 1000 times is ().
a 12.5 b 125 c 1250d 1.25
3. One angle in the triangle is 75, and the degrees of the other two angles may be ().
A: 95, 20, 35, 60, 55, 50, 45, 70.
4. The following are the lengths of each group of sticks, and the one that can form a triangle is ().
A.2、3、2 b . 1、4、5
C.3㎝、9㎝、5㎝ D.8㎝、 1㎝、5㎝
5.m×24+76×m=(24+76)×m, which is the application of ().
A. Multiplicative associative law B. Multiplicative commutative law C. Multiplicative distributive law
Fifth, the operation problem. (2 points for each question, ***6 points)
1. Measure the degree of the lower angle with a protractor.
2. Draw an angle of 700 degrees with a protractor.
3. Determine the height on the corresponding bottom edge through point A. ..
Sixth, solve the problem. (1, 4 points for questions 2, 3 and 4, 5 points for questions 5, ***2 1 minute)
1. On Children's Day, the school plans to buy 50 basketballs and 50 volleyballs for each person. A * * *, how much is it?
Xiaoming's father is going to travel. He bought a kettle and an umbrella with 50 yuan money. How much is left?
3. Shi Sheng Jiahe Supermarket bought 12 boxes of children's toothpaste, 25 boxes each, and each box sold 4 yuan money. How much can these children's toothpaste sell?
Xiaolan's mother took 50 yuan to buy food. Buy meat dishes 28.75 yuan, buy vegetarian dishes 6.35 yuan. How much is left? (4 points)
The "Sunshine Sports" in our school has been officially launched, and the school is going to buy 120 skipping ropes for students, if each skipping rope is X yuan.
(1) The school took 1000 yuan. How much should I get back? (expressed by a formula containing letters) (2 points)
(2) When x=7, how much should I get back? (3 points)
The fourth grade of primary school, Volume II, Math Final Exam Question 2, Intelligence platter (***20 points)
The highest bit of the quotient of 1 and 352÷3 is () bit, and the product of 24× 18 is () bit.
2. If the quotient of □37÷4 is two digits, you can fill in () in □.
3. 1980 has () days in February, and 1900 has () days in the whole year; National Day is in the () quarter, and there are () days in this quarter.
4. Fill in the appropriate company name in ().
(1) The weight of an elephant is 6 ().
(2) A cement road built in Wang Ying Village is 2 ()
(3) The area of the cover of the math book is about 400 ().
(4) The garden area is about 10 ().
5. A locomotive departed from Xi 'an at 5: 48 pm the next day and arrived in Beijing at 7: 23 am the next day, passing () hours () on the way.
6, 3 tons = () kg 7 jiao = () yuan.
14 square decimeter = () square centimeter 2 yuan 8 jiao = () yuan.
4000m = () km 4.5 yuan = () yuan () Angle.
7. On the right are two figures with a square of 1 cm2, and their perimeters are () and () respectively.
8. Dad's height is 176 cm, Mom's height is 165 cm, and I'm 134 cm. Our average height is about () centimeters.
The scores of 9.4 pupils in the 50-meter race were17.03 seconds, 2 8.09 seconds, 3 8.1second and 4 7.3 seconds respectively. The best result is (), and the worst is ().
Second, choose carefully. (***4 points)
1. There are three pieces of iron with an area of 9 square decimeters, 90 square decimeters and 900 square decimeters respectively. Which iron sheet is closest to 1 square meter? ()
A, 9 square decimeters b, 90 square decimeters c, 900 square decimeters
2. There are three classes in Grade Three, with an average of 40 students in each class. There are 38 students in Class One, 40 students in Class Two and () students in Class Three.
a、38B、40C、42
Third, fill it out. I can do it. (No.5 10, 2 small questions ☆, the rest 1 each space ☆, ***23 ☆)
1, students, among the nine planets around the sun, Pluto is the farthest from the sun, with an average distance of about 5.946 billion kilometers. This number is written as (), and the mantissa after one billion is about () kilometers.
2. In the number 8000808000, the left "8" means (), the middle "8" means (), and the right "8" means ().
3. The two numbers adjacent to 999999 are () and ().
4. For the five-digit port 04238÷354, the quotient should be two digits, and the maximum number can be filled (); For the case that the quotient is three digits, the minimum value in □ can be filled in ().
5. The circumference of a rectangle is 36m, the length is12m, and the area is ().
6. A÷B=88 is known. If A is expanded by 10 times, B is also expanded by 10 times. Their quotient is (); If a is magnified by 10 times and b remains the same, then their quotient is ().
7. Please estimate that the product of 208×385 is about (); The quotient of 9 150÷295 is about ().
8506 square decimeter = () square centimeter 3 hours 20 minutes = () minutes
9. Fill in the appropriate symbols in ○.
28579○99988345067○8354067
128÷8○( 128÷4)÷(8×4)
300÷ 15○(300÷3)÷( 15÷3)
10, with four numbers, 2, 2, 8, 9. You can use "+,-,x, ↓ 0 ↓ 0 ↓ 0 ↓ 0 8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595; 0 \8595;
The third question of the fourth grade primary school mathematics final exam (time: 80 minutes, full mark: 100)
First, oral calculation. (0.5 points × 14 = 7 points)
16×5= 0.29× 10= 7.3-3.9= 46+99=
35÷ 100= 3.7 1+0.29= 198-27= 78×0+2=
10-2.6-7.4= 47+98+53= 25× 12×4=
150÷2÷5= 4 1×2+59×2= 19×2 1-2 1×9=
Fill in the blanks. (Per grid 1 minute, ***23 points)
1. The number consisting of 9 1, 3% and 6 thousandths is (), and its counting unit is ().
2. Write it at 6: 095 (), and keep two decimal places about ().
3. In a right triangle, if one acute angle is 32.5 degrees, the other acute angle is () degrees.
4. Without changing the size of the number, rewrite 7.4 as a number with a counting unit of 1% ().
5. The base angle of an isosceles triangle is 20, and the vertex angle is (). This triangle is divided into () triangles.
6. fill in ">", "
2.36 tons ○ 2370kg1.1kg1070g
456 m 0.456 km 20 cm 8 mm 20.9 cm
7. 1.3 is expanded to 130, and 2.8 is reduced to 0.028.
8. Write three decimal places between 1.7 and 2.0: (), (), ().
9. Two identical right triangles can be combined into a () shape.
10. 14206= 1×( )+4×( )+ 2×( )+6×( )
1 1. An engineering team built a 960-meter-long road for 8 days, leaving 368 meters. How many meters of roads are built on average every day? Before, you have to find ().
Third, choose the serial number of the correct answer and fill it in brackets. (2 points× 5 =10 points)
1. There are three groups of line segments, which can be enclosed into a triangle by (). (Unit: cm)
A.2，3，6 B. 4，5，9 C. 6，7，8
A piece of wood is 8 meters long. It needs to be sawed () times to be evenly divided into four sections.
A.3 B. 4 C. 5
3. It is approximately 4.3527 by "rounding". In order to maximize this approximation, this number should be accurate to ().
A. Unit B. Decimal C. Percentile
4. In the decimal 6.56, the "6" to the left of the decimal point is the () of the "6" to the right.
A. 100 times C. 1000 times.
5. Remove the zero at the end of 2.060 and the original number ().
A. the size remains the same. B. expand to 1000 times the size. Reduce to its size.
6. The following questions need to know a piece of information to solve. Need to know the information is ()
Lingling used pocket money to buy four notebooks from 4 yuan and five pencils from 3 yuan in the stationery store, and a fairy tale book in the bookstore. The remaining money is 19 yuan, so how much money did she bring at first?
A. the price of each notebook B. the price of each fairy tale book C. the price of each pencil D. the money left after shopping
Fourth, calculate the following questions, and simplify what can be simplified. (3 points× 6 =18 points)
( 1)596+6 12÷ 12×4 (2)( 1 12- 196÷ 14)×27 (3)88× 125
(4)3.9+5.02+3.98+ 1. 1 (5)( 167+253)÷(20-5) (6)25×4 1-25
1. Color indicates the following decimals.
0.03m 0.46 1.7
2. Draw a triangle in the grid diagram below, which is both an isosceles triangle and a right triangle, and draw its height. (Mark the word "high". )
Please use the information below to mark the location of the laboratory building and library in the picture on the right.
(1) The experimental building is 30 meters south of the teaching building, with a distance of 100 meters. The location of the experimental building is marked with ""in the figure.
(2) In order to facilitate students' reading, the library will be built between the teaching building and the student apartment. Mark the location of the library you designed with ""in the picture and describe it in language: the library is () meters away. (Note: Student apartments, libraries and teaching buildings are not necessarily in a straight line. )
Fifth, solve the problem. (***28 points. )
1.(3 points) Xinxin Fruit Store delivered 26 boxes of apples and 0/8 boxes of pears. If you want to know how many kilograms these fruits have been transported,
What other information do we need to know? Please write it down:
2. Star Supermarket sells a batch of toys, with the purchase price 16 yuan per piece and the price per piece. After these toys were sold out, * * * earned 408 yuan. How many toys are there in this batch? (5 points)
3. According to the information on the shopping list on the right, calculate the payable amount and change continuously. (5 points)
Miss Liu went to the store to buy prizes. Please help Miss Liu with her math.
48 yuan /38 yuan/12 yuan/18 yuan/month.
(1) How much does it cost to buy five and 10 a * * *? (5 points)
(2) Please ask a math problem that can be solved in two or three steps and answer it. (6 points)
The table below shows Xiaoli's heartbeat before and after skipping rope.
Time before skipping rope, immediately after skipping rope, 1 point, 2 points after skipping rope and 3 points after skipping rope.
Quantity/time 90140115100 90
(1) According to the data in the above table, make a broken line statistical chart. (2 points)
(2) Please analyze the changing trend of Xiaoli's heartbeat before and after skipping rope according to the statistical chart. (2 points)
The fourth grade elementary school mathematics volume II final exam questions 4, calculation
1, the number is written directly.
1× 1 = 1-0.9 = 0.32÷2 = 0.8×5 = 8m-6m =
0.9×0. 1 = 3. 1 1+2.22 = 0.36÷0.4 = 12.5+ 12.5×7 = a×a =
2, vertical calculation and checking calculation
8.52+ 1.36= 6- 1.37= 18.7×0.67=
Check calculation:
4.82× 1.5= 6.2 1÷0.3= 57.4÷ 17=
(Keep two decimal places)
Check calculation:
3. Use your favorite method to calculate.
70.8- 1.25- 1.75 (8+0.8)× 1.25 9.4×[0.96÷(5.4÷0.9)]
42.8 ×7.8+57.2×7.8
36÷[(6. 1-4.6)×0.8]
4. Solve the equation
8χ÷2= 15 5χ-3.9=5. 1 1.2(χ-2)=24
fill (up) a vacancy
1. Divide "1" into 1000, where 1 is (), which can also mean ().
2.0.4 has () 0. 1, and 0.025 has () 0.00 1.
3, 4.50202 ... is a decimal (), which is written in a simple way (). The reserved integer is about (), and the reserved two decimal places are about ().
4, 69 grams = () Jin 5 yuan 6.7 points = () yuan.
5 square decimeter = () square meter 1 kg 500 grams = () grams.
5. Contrast size: 2.43×1.1.002.438.16.08.16 ÷ 0.3.
6. In an isosceles triangle, one base angle is 75 and the other base angle has a degree of ().
7. In the known triangle ABC, ∠ A = 60, ∠ B = 30, ∠C= (), and the triangle ABC is a () triangle.
8. In 3 χ-5, when χ = (), the result is 4.
9. There are () rectangles on the right.
10, known as 2, 4, 6, 8, 10, ..., the nth one is ().
1 1, 1.027, 10.27, 1.072, 1.207 in descending order are:
()& lt()& lt()& lt( )
Third, choose
1, the three decimal places greater than 0.6 and less than 0.7 are ()
A, nine B's, 99 C's, countless ones.
My mother is one year old and my father is five years older than my mother. After another N years, my father is () years older than my mother.
a、a+5 B、5 C、5+n
3. If the two angles in a triangle are equal, then the triangle must be ().
A, acute triangle b, right triangle c, isosceles triangle
4. Multiply a number (except 0) by a number less than 1 to get the product of a certain number ().
A is greater than b and less than c, equal to
5. The product of 10 times of A and 5 times of B is ()
a 、( a+ 10)×(b+5) B、a× 10+b×5 C、 10a×5b
6. In the picture below, () is the least easily deformed.
A, rectangle b, triangle c, parallelogram
7. The following () groups of line segments can form a triangle.
a、 1 2 3 B、2 3 6 C、3 3 5
Fourth, hands-on operation.
Draw a line segment and divide the picture into triangles and trapezoid.
Verbs (short for verb) solve problems.
1, Xiaohua has 1.9 yuan, Xiaoqing has 3.9 yuan. They clubbed together to buy a book from 0.8 yuan and donated it to the needy students. How many books can they buy with their money?
2. On/0/6 days after the tsunami, Ding Lei, who is no longer the richest man in China, announced in Guangzhou that he would personally donate/0/0.2 million US dollars to the China Red Cross to help the disaster-stricken areas rebuild their homes. His donation is tens of thousands of RMB (1 USD is equivalent to 8.25 RMB)?
3. When a bus arrives at the station, 8 people get off and 6 people get on. At this time, there are still 38 passengers on board. How many people were there before the bus arrived at the station? (column equation solution)
Two trains leave from two places 798 kilometers apart at the same time. 4.2 hours later, two trains met. Car A travels 86.7 kilometers per hour. How many kilometers does bus B travel per hour?
There are 360 employees in a factory, of which 40 are women, less than three times as many as men. How many men and women are there in this factory?
The fourth grade of primary school, the second volume of mathematics final exam questions 5, fill in the blanks
1. The letter additive commutative law is (+=+); The multiplicative associative law expressed by letters is () = ().
2. The length of the rectangle is16cm and the width is10cm. The area of this rectangle can be (10) or (), and the area is equal to () square centimeters.
3. When calculating 32+45+55, you can add the associative law first and then calculate (+). (Fill in the order of appearance)
4. Fill in the appropriate numbers in the following () according to the algorithm.
25+()= 38+()()35 =()96 1 18+ 159+ 182=(+)+ 15946254 = 46()
5.450 is greater than 105 () and less than 680 ().
6. The school has a class of 40 minutes, with a break 10 minute. At eight o'clock in the morning, the bell rang and the first class began. According to this calculation, the bell of the third class should ring at (:).
7. Cut a square wireframe with a side length of 6 cm along one side and pull it into a line segment, so the length of this line segment is () cm. Circle this line into a rectangle with a length of 8 cm. The width of this rectangle should be () and the area should be () square cm.
Second, judgment.
1.m+n=n+m Apply the additive associative law. ()
2.78+43+22=(78+22)+43。 ()
3. 146-98= 146- 100+2 。 ()
When two numbers are multiplied, one number is enlarged by four times and the other number is reduced by four times, and their products remain unchanged. ()
Third, choose
1.12578 = 7 (1258) This is the application of ().
1. Multiplicative commutative law
Multiplicative associative law
C, multiplicative commutative law and associative law
2. The formula equal to 45 1-5 1-49 is ().
a、45 1-(5 1+49)
b 、( 45 1+49)-5 1
c、45 1-49+5 1
3. When parking in the park parking lot, you should pay it to 3 yuan in the first two hours, and then to 2 yuan every hour. Uncle Wang stopped for 4 hours. He should pay ().
One, 9 yuan.
B.8 yuan
C.7 yuan
4. Rectangles and squares with equal perimeters, their areas ().
First, the rectangle is relatively large.
B, the square is bigger.
C, uncertain
Fourth, calculation
1. Write the number directly.
75+35=98-79= 1004=353= 1305= 18020=49070=958=465=873=
2. Use the exchange method for longitudinal calculation and inspection.
289+476=2864=
3. Calculate the problem, and simplify it if it can be simplified.
893+594+ 107= 105+298=5( 1724)= 125 16=3592=329+(47 1+86)=
4. Column calculation.
What is the quotient of (1) 120 plus 84 divided by 7?
Column: answers
A: Yes.
(2) What is the quotient of the difference between 703 and 295 divided by 5 1?
Column: answers
A: Business is.
Fifth, solve practical problems.
1.5 boxes of bees can brew 375 kilograms of honey a year. According to this calculation, how many Jin of honey can 20 boxes of bees brew?
Column: answers
Answer: You can brew 10 kg of honey.
2. A ship, sailing from Nanjing to Xiangyang Fishing Port, with a speed of 20 kilometers per hour, arrived at 10 hour; When I come back, I will drive at a speed of 25 kilometers per hour. How many hours can I go back to Nanjing?
Column: answers
I can return to Nanjing in an hour.
There are five cows in Xiao Yong's family. On average, each cow produces 8 kilograms of milk every day. How many kilograms of milk do these cows produce in May?
Column: answers
A: The milk output in May is one kilogram.
4. The length of a rope is175m. It took 38 meters for the first time and 62 meters for the second time. How many meters are left? (This process uses a simple calculation of 5%)
Column: answers
A: There is still rice left.
Daqingshan Forest Farm plans to plant 800 trees this year. It has been loaded for 3 days, and 140 trees are loaded every day. It is planned to plant the rest of the plants in 2 days. How many trees will be planted on average every day?
Column: answers
Plant a tree on average every day.
The fourth grade elementary school mathematics volume II final exam question 6. First, write the number directly. (10)
6.9-6= 0.9+0.6= 1-0.09= 0.9+0. 1= 2.7+2.2=
0.2+0.8= 0.7-0.7= 5.5+ 1 1= 1.3-0= 9.7-7=
0.2×8= 12.5×8= 6.2+0.04= 2.5×0.4= 1.4 1× 1000=
0.6×0.7= 6-0.7= 6.4+4.6= 0.04×0.3= 5. 18+3.02=
Second, fill in the blanks. (***25 points, 1-6 0.5 points per space)
6+0 of 65438. 6.09 in () position means (), and 9 in () position means ().
2. Divide "1" into 100 parts on average, where 1 part is expressed as () by decimal or () by fraction.
3.0.4 has () 0. 1, and 0.025 has () 0.00 1.
The counting unit of 4.0.050 is (), including () such counting units.
5. The sum of the two sides of the triangle (), the difference between the two sides ().
6. The dotted line in the statistical chart indicates () and the line indicates ().
7. After a coat is reduced by X yuan, it is 100 yuan, and the original price is ().
8. Four hundred, five tens and three tenths make up a number ().
9.0.3×0.4×0.25=0.3×(0.4×0.25) The algorithm of () applies.
10. The ratio between two adjacent decimal units is ()
1 1. In a right triangle, one acute angle is 36 and the other acute angle is ().
12.540g = () kg 7 yuan 8jiao 3 minutes = () yuan 9 tons 40kg = () tons.
3 m 6 cm = () m 7 t 33 kg = () t 99 decimeter = () m.
13. Fill in "
7.9○8.2 0.09○0. 12 5.7○5.8
3.6 1 m 362cm 284g 0.284kg 5.3m 532cm
Three. True or false. (6 points)
Although there are two "3" numbers in 1. 3.368 is different, they mean the same thing. ( )
2. The more decimal places, the larger the decimal. ( )
3. Add "0" or remove "0" after the decimal point, and the decimal size remains unchanged. ( )
4.3.4 hours = 3.40 minutes. ( )
5. The arithmetic of integer addition is also applicable to decimal addition. ( )
There is only one decimal between 6. 2.7 and 2.9. ( )
Fourth, choose (65438+ 0 points per grid, ***5 points).
1.1.76 □≈1.76, and the maximum value in □ is ().
a、5 B、4 C、9
2. There are () decimals greater than 0.6 and less than 0.7.
A, 9 B, 0 C, countless
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. The largest two decimal places consisting of two, four and five digits is ().
A, B, C and 5: 42.
The zero in the () bit of the number 5.8080.80 can be removed.
One hundred percent, ten percent.
Verb (abbreviation of verb) calculation (28 points)
1. Vertical calculation. (8 points)
5.08×0.65= 54.68- 12.8 =
80.4×0.35 = 19.92+420.26=
2. The calculation of parting can be simplified if it can be simplified: (8 points)
15.89-(5.89+6.98) 0.8×3.9× 1.25
4.87×2.34+4.87×7.66 1.87+0.26+6. 13+ 1.74
3. Solve the equation (8 points)
5.34+X = 26.7 5X- 1.5 = = 13.5
15+2X=45 X÷0.6=4.5
4. Column calculation. (4 points)
(1) One number is more than the sum of 2.02 and 3.28 1.3. What's this number?
(3) What's the difference between 2460 minus the product of 52 and 26?
Sixth, solve the problem. (26 points)
1. Xiao Pang took the money from 50 yuan and went to Lianhua Supermarket. He spent 19.37 yuan on school supplies and 15.63 yuan on snacks. How much is left? (5 points)
2. The naughty family drove to Beijing during the May Day holiday at a speed of 90.5 km/h, and it took 4.5 hours to reach their destination. How many kilometers did they walk? (5 points)
3. The fruit supermarket bought 10 tons of fruit, which has been shipped back to 7 cars, each with 1.25 tons. How many kilograms are left? (5 points)
A dripping faucet wastes about 43.2 kilograms of water a day, and a leaking toilet wastes about 956.4 kilograms of water a day. According to this calculation, how many kilograms of water will be wasted by a leaky faucet and a leaky toilet 10 a day? (5 points)
5. A canteen bought a batch of rice, ate 158kg, and the remaining 32kg was four times less than the amount eaten. How many Jin of rice did you buy in the canteen? (6 points)