1, in the formula without brackets, if there is only addition, subtraction or multiplication and division, it should be calculated from () in turn.
2, a number plus 0, get (); Multiply a number by 0 to get (), and divide 0 by a number to get ().
3, 60÷(6+2×3) to calculate () method first, then () method, and finally () method.
4. Fill in "
50+4×5○(50+4)×5 72-24÷ 12○(72-24)÷ 12
153-46-34○ 153-(46+34) 540÷9÷5○540÷(9×5)
5. 1000-(49+76)×32 If subtraction and multiplication are done first, then addition is done, the formula should be changed to ().
6. When facing the sun in the morning, the left is (), the right is (), and the back is ().
7, 30 north by west, can be said to be (); 50 east by south, can be said to be ().
8. In the picture on the right, Xiao Qiang is in the direction of Kobayashi, on the contrary, Kobayashi is in the direction of Xiao Qiang.
9. Take the school as the observation point:
The bookstore is in the direction of the school, the distance is meters.
The distance between the library and the school is meters.
10, first find the result in, and then list the comprehensive formula according to the formula without calculation.
( 1)22 1×3= (2)
208÷ 16=
663+ 13=
Comprehensive formula
Second, the judgment question. (5 points)
1. In the formula without brackets, multiplication, division, addition and subtraction must be calculated first. ( )
2, 0 divided by any number equals 0. ( )
3, 2+ 12-6 and 3× 15÷5 have the same operation order, from left to right. ( )
4. In the formula of 120-20×5, the subtraction must be calculated first. ( )
There are brackets in the formula, please count them first. ( )
Third, multiple choice questions. (5 points)
1. In the following questions, the operation order of () is subtraction → division → addition.
a、37- 12÷3+ 1 1 B、30+(24-6)÷9 C 、( 24+ 124)÷(35-20)
2. When the minuend () decreases, the difference is 0.
A is equal to B, greater than C and less than C.
3、32×5÷32×5=( )
a、 1 B、0 C、25
4, 580 minus 65, multiplied by 20 plus 13, what is the product? The correct formulation is ().
a 、( 580-65)×(20+ 13) B 、( 20+ 13)×(580-65) C、580-65×20+ 13
5. In the picture on the right, Shandong Province is located at () in Beijing.
A, south by west to B, south by east to C, north by west.
Fourth, calculation. (30 points)
(1), oral calculation. (6 points)
82+258= 24×60= 840÷20= 860-403=
58×0= 320÷20= 22+508= 125-25×0=
420÷ 15= 25×6×4= 65- 15×2+3= 75-6×( 1+4)=
(2) Recursively calculate the following questions. (18)
72-44+85 234- 135÷9 144+(57— 12)×2
95- 15×6+4 1 ( 15+20)×3 (75+30)÷(20—5)
(3) Are the following calculation processes and results correct? Please judge. Please correct the mistake. (6 points)
23+7×( 12-4) 25+75÷75+25
=30×8 = 100÷ 100
=240 = 1
Correction: correction:
Fifth, the operation problem. (12)
1. Mark the location of buildings in the campus on the floor plan. (6 points)
(1) 300 meters north of the teaching building is the Children's Palace.
(2) The library is 30 degrees northeast of the teaching building, with a distance of 300 meters.
(3) The laboratory is 45 degrees southwest of the teaching building, with a distance of 400 meters.
(4) The Art Building is 25 degrees east of the south of the teaching building, with a distance of 250 meters.
2. Draw a road map according to the description. (6 points)
Depart from the square, walk 2000 meters at 40 degrees southwest, and arrive at 1 point. Drive due west for 3000 meters and reach point 2. Finally, walk 40 degrees to the north and 2000 meters to the bookstore.
Sixth, the application problem. (29 points)
1. Teacher Zhang has to correct 52 compositions, and has already corrected 20. If you revise 8 articles per hour, how many hours will it take to finish? (4 points)
Xiaoming's height 120 cm is twice as high as his cousin's, while his uncle is three times higher than his cousin's. How many centimeters is uncle tall? (5 points)
The expressway from a city to b city is 360 kilometers long. The speed of the car on the expressway is 90 km/h, and the speed on the ordinary highway is 60 km/h ... How much time does it save to take the expressway from City A to City B than the ordinary highway? (5 points)
The fruit shop brought 8 boxes of bananas and 8 boxes of pineapples. Bananas are 35 kg per box and pineapples are 20 kg per box. How many kilograms of fruit did a * * * send? (5 points)
The school held a cross-country race in winter. The competition route is as follows.
(1). According to the road map, talk about the direction and distance of Xiaoming's participation in the competition and complete the following table: (6 points)
(2) What is Xiao Ming's average speed? (4 points)
Unit 1 and Unit 2 Math Test Paper 2, Volume 2, Grade 4. First of all, think about it and fill it in. (24 points)
1. In 1456089003, "4" is in the position of (), indicating (); "8" in () position, table
Display (). The pronunciation of this number is: ().
2. China's "Shenzhou VI Manned Spaceship" runs in the air with a flying speed of about 28.08 million meters per hour. This number is written.
Write: () meters, rewrite it into tens of thousands, and the number is about () meters.
3. In the decimal order table, the third digit to the right of the decimal point is (), and its counting unit is ().
4. The number consisting of 6 10, 3 0. 1 and 5 0.00 1 is (). This number is:
()。
5. The writing of circulating decimal 8.8989 is very simple: (), and keeping two decimal places is probably ().
6. Enlarge 2.06 10 times is (); Minus () times from 8.5 is 0.085.
7.300 cm = () m 1.06 ton = () kg.
8.2.8km = () km () m () Yuan () Jiao =3.9 yuan.
9.5 square meters and 7 square decimeters = () square meters = () square decimeters.
10. At 9 o'clock on the clock face, the angle formed by the hour hand and the minute hand is () angle; () hour hand, hour hand and minute hand group
This angle is a right angle.
1 1. Put ">" in the brackets below. , "<, or" = ".
99999999 ()1100,000 3.08 () 3.08002.109 () 2.1009.
2.57()2.5660.63×0.9()0.63 1.02m() 1.2m 2cm。
Second, clear the concept and make a correct judgment. (Draw "√" correctly in brackets and "×" incorrectly. ) (5 points)
12. Add two "0s" at the end of 2.09, and the size of this number remains unchanged. ()
13. The light emitted by a flashlight can be regarded as light. ()
14. The greater the distance between the two sides of the angle, the greater the angle. ()
15. Two straight lines that never intersect are called parallel lines. ()
16. When an integer is divided by a decimal, the quotient must be greater than this integer. ()
Third, sit in the right position. Fill in the brackets with the letters of the correct answer. ) (4 points)
17. An integer with the highest bit of one billion. This number is () digits.
A.viii.b.ix.c.x.d.xi
18. Move the decimal point 4.08 two places to the left and then three places to the right. The original number is ().
A. reduction 10 times B. expansion 10 times C. reduction 100 times D. expansion 100 times.
19. In the figure below, two straight lines are perpendicular to each other ().
Asian Development Bank.
20. In angles 320, 1 100, 890, 900, 60, 9 10, 1790, 1800 and 1500, the obtuse angle.
A.
A. 1B.2C.3D.4
Fourth, draw pictures as required. (3 points))
2 1. Draw an angle of 100 degrees with a protractor. 22. Draw a square with a side length of 3 cm.
5. Compare and see who is faster to whom. (34 points)
23. Write the number directly.
2.05+ 1.65=3.4- 1.08=48×0.0 1=2.8
0.6× 1.5=4.2÷0.6=0÷ 1.2+ 1.2=2-0.24-0.76=
24. Vertical calculation. (The number shall be kept to two decimal places. )
4.79×0.252. 18÷3.4
25. Calculate the following questions, and simplify what can be simplified.
⑴9.86-3.4÷ 1.7× 1.3⑵0.36×3.9+3.9× 1.64
⑶7.23-(2.8+ 1.23)⑷ 1.64×2.5+2. 1÷0.6÷0. 1=
⑸2.4×(0.85÷ 1.7)- 1.08⑹0.04×[( 17.6- 14. 1)÷ 1.4]
26. Column calculation.
The product of (1)3.2 and 1.6, minus the quotient of 19.5 divided by 6.5, what is the difference?
2.5 minus 0.7 divided by the quotient of 1.4, and the difference is multiplied by 1.5. What is the product?
Sixth, solve the problem. (30 points)
27. Xiaohong's family bagged 1470 kg of corn this year. First, put them in big bags, each bag is 50 kilograms. 24 bags are packed in small bags, each bag is 30kg. How many more sachets do you need?
28. The length of the canal dug in Zhang Cun is 1.200m, and it is planned to be completed in 15 days. Actually digging 20 meters more than planned every day, how many days did it actually take?
29. During the summer vacation, Xiao Fang plans to finish reading the book "100,000 Why" in 20 days, reading 15 pages every day. Actually, I read 20 pages a day. She actually finished reading it a few days in advance.
30. Hong Qian and Gu Ying typed a material of 1820 words by computer at the same time. Hong Qian typed 120 words per minute, and Gu Ying typed 140 words per minute. How many minutes will it take them to finish typing this material?
The fourth grade mathematics examination paper III 1 Volume II Unit 1 Unit 2. Think about it and fill it in. (1 minute per grid, ***20 points)
1. The store bought a box of colored pencils, each box of 24 yuan. It costs () yuan to buy these colored pencils.
2. Divide the 3-meter-long steel wire into 8 segments on average, each segment is () meters long, and each segment accounts for () of the total length.
3. It is known that the top angle of an isosceles triangle is 80, and one of its bottom angles is ().
4. Rewrite 5807200 into "10,000" and one of the numbers is ().
The greatest common factor of the numerator and denominator of 5.24/30 is (), and the simplest fraction is about ().
6. Write the quotient of the following questions directly according to 72÷ 12=6:
720÷ 12=720÷ 120=
7. Fill in the appropriate numbers in brackets.
5.09 tons = () kg 8 liters 28 ml = () liters.
150kg = () tons 4050m = () kilometers expressed in fractions: 28 minutes = () when 35cm = () meters.
8. The length of an equilateral triangle is 9 cm, the circumference is (), and the sum of the inner angles is ().
9. The decimal fraction consisting of three thousandths and six thousandths is (), and the written score is ().
10. A rope? Where's rope B? Same length, () rope length.
Second, the fire eye gold essence, accurate judgment. (Mark "√" in brackets for the right and "×" for the wrong) (65438+0 points for each small question ***5 points)
1.30.05 Pronunciation: 30 o'clock.
Five. ()
2. Because 22=2×2, a2=a× 2. ()
3. Three line segments with lengths of 3cm, 3cm and 6cm can form an isosceles triangle. ()