320÷4= ? 600×30= ? 2.3 billion+1200 million =
8 12×0= 69÷69= ? 670 thousand+460 thousand =
125×8= ? 0÷52= 123 -22 =
Second, I believe you can fill it out correctly. (2 1 min)?
1. In the numerical sequence table, the sixth digit from the right is (), and the billion digits are (? ), the ratio of two adjacent counting units is ().
?
2, 92005000 is pronounced as (), and its highest position is (? ) bit?
3, 3, 4, 8 and four zeros make up a number that doesn't read zeros (), and the number that reads three zeros is (? )。
?
4. The line segment has () endpoints;
Ray has (? ) endpoint;
The endpoint of a straight line ().
?
At 9 o'clock on the clock face, the hour hand and minute hand become (? ) angle;
On the clock face (? ) The hour hand and the minute hand are at right angles.
6. 130 □ 672 ≈ 1.3 million, and the maximum in □ should be filled in ().
? The minimum value of 240 □ 890 ≈ 2,465,438+00,000 □ should be filled in ().
7. The speed can reach 180 km/h, which can be written as180 km/h;
Dad rides a motorcycle at 60 kilometers per hour. He can write (? );
Dad's walking speed is 75 meters per minute, so he can write (? );
Snails crawl at a speed of 2 cm per second and can write ().
8. Arrange the four numbers 18564, 20002, 18499 and 100000 in descending order.
( ? )>( ? )>( ? )>( ? )
Third, multiple choice questions. (10)
The product of 1 and 350×80 has (? ) 0.
A.2 ? B. 3？ C. 4？ D. 5
2. In the following figures, reading two zeros is (? )。
A.606000？ B.606 million? C.6060606？ D.6060600
3. You can draw after two o'clock. ) straight line.
A.0 B. 1 C.3？ D. countless
4. Add two acute angles (? )。
A. is it obtuse? Is this a right angle? C.is it an acute angle? All three angles are possible.
5, the following relationship is correct (? )。
A. 1 right angle =4 right angles? B. 1 obtuse angle =2 right angle C. 1 right angle =2 right angle.
6. Rounding 999 to the nearest number is (? )。
A.990？ B. 1000？ C.900
7、( ? ) is the counting unit, (? ) is a number. (2 points)
A: Ten thousand? B: 100000 c:100 people.
At 8.9: 30, the hour hand and minute hand form (? )。 (2 points)
A: acute angle b: right angle c: obtuse angle d: flat angle
Fourth, Bao Gong decided the case. (5 points)
1 and 8960440000 The mantissa after omitting hundreds of millions is about 8.9 billion. ( )
2. There are two rays that can form an angle. ( )
It is impossible to draw an angle of 75 with a pair of triangular rulers. ( ? )
The straight line is longer than the light. ( ? )
5. Look at a 30 angle with a magnifying glass with a magnification of 3 times, and the angle becomes 90. ( )
Five, column vertical calculation (24 points)
( 1) 24×55 (2) 66×89 ? (3)36×72 ? (4)308×5 1
(5)45×690 ? (6)305×30 ? (7)280×55 (8)27× 143
6. Draw a picture, measure, calculate and count. (10)
1. Draw a ray and cut a 3 cm long line segment on the ray. (2 points)
2. Can you draw the angles of 120 and 105 with a pair of triangular rulers? (2 points) (keep drawing traces)
3. Draw parallel lines of AB through point O and vertical lines of AC through point O in the following figure (3 points).
4. Point out what the following angles are. (3 points)
Seven, solve the problem. (20 points)
1, a loom can weave 110 decimeter in1minute. How many meters can this loom 1 hour weave? (3 points)
2. The library bought a batch of books, each shelf can hold 150 books, 1 1 shelves, and 630 books have not been put in. How many books did the school buy back? (3 points)
Uncle Wang drove from place A to place B at a speed of 70 kilometers per hour for six hours.
(1) How far is it from A to B? (3 points)
(2) When I came back, I speeded up because I had a task. It only took me four hours to get back to A. What was my speed when I came back? ? (3 points)
In the shop, you need a sports coat made in 35 yuan, a short sleeve made in 20 yuan and a pair of sports pants made in 30 yuan.
(1) Teacher Fang brought 430 yuan money. If she buys all the coats, 12 yuan, will the money be enough? (4 points)
(2) Teacher Fang brought 430 yuan money and bought eight short sleeves and five pairs of pants. How much is left? (5 points)
People's education printing plate, the fourth grade elementary school mathematics, the first volume, the mid-term examination questions 2 1. Fill in the blanks.
1, and fill in the appropriate decimal in ().
7 yuan 8 points = () yuan 50 cm = () meters
1 ton 2kg = () ton 190 decimeter = () meter.
The counting unit of 2.8.60 is (), which means () 0. 1.
3,270.027 is pronounced as ()
4.0.7 contains () 0. 1. Write it as a two-digit decimal () without changing the size of the decimal. There is () 0.0 1 in it.
5. 30.07 consists of 3 () and 7 ().
6. From small to large:
0.5 0.504 0.0 45 0.54 0.45 0.054 ()
7. Write 3 decimals () () between 0.3 and 0.4.
Second, column calculation. (10)
(1) One number is more than the sum of 2.02 and 3.28 1.3. What's this number?
(2) 100.86 minus the sum of 10.54 and 20.86. What is the difference?
Third, multiple choice questions.
(1) rewritten as decimal is ()
A2.43+3.4 B 0.243+0.34 C 2.43+3.4
(2) The sum of 0.1and 0.0 1 is much worse than their difference ()?
A 0.2 B 0.02 C 0.9
(3) The largest of the six numbers of 5.545, 5.54, 5.55, 5.454, 5.6 and 6.5 is (), and the smallest is ().
A5.6 B 5.454 C 6.5 D 5.54
(4) After "0" is removed from the figure below, the size remains unchanged ().
A9.30 B 450 C 0. 102
(5) More than 0.3 and less than 0.4 have two decimal places ()?
A 10 B 9 C is countless.
(6) The decimal number greater than 0.3 and less than 0.4 is ()?
A 10 B 9 C is countless.
(7) What is the decimal between 0.1and 0.2?
A. Nine B.10 C. Countless.
8. 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.
9. The maximum counting unit of the decimal part is (). ?
A, 1 B, one tenth of c, one percent.
10. Among the following options, () is between 0.4 and 0.5. ?
a、0 .03 B、3 .09 C、049
1 1 3.064, 3 .604, 4.603, 4 .306 and 3. 406, according to the size in the middle of the number is ().
Answer, 3. 604 B、3。 406 degrees Celsius, 4 degrees Celsius. 603 D、4 .306
12.5.17+8.9+4.83 = 5.17+4.83+8.9, with ().
A, additive associative law b, additive commutative law and associative law c, additive commutative law.
Fourth, calculation
1. Write the number directly.
5-4.76= 4+0.7= 1-0.99= 7.9-7= 3+3.7=
4.2+5.8= 6-4.92= 0.64-0.4= 1-0.8= 2.2+ 1.8=
2. Use vertical calculation and check.
2.98+ 1.022 12.20-9.09
I use my favorite method to calculate.
15.73-(6.25+3.73) 70.9- 1.25- 1.75 2.54+9. 16+9.46-9. 16
1.39+0.72+0.6 1+3.28 17.8-3.7-6.3 8.28-( 1.28+3.7)
Verbs (short for verb) solve problems.
(1) The known minuend is 4.06, with a difference of 2.3. What is the minuend?
Uncle Zhang bought two books in the bookstore. A 28.5 yuan, a 14.4 yuan. He gave it to 50 yuan. How much should he get back?
(2) A table is 60.5 yuan, a chair is 20.5 yuan cheaper than a table, and how much is a table and a chair?
(3) Xiaohong went to the stationery store and bought a ballpoint pen and a pen. Each ballpoint pen 1.5 yuan is 3. 12 yuan more than each ballpoint pen. Xiaohong gave it to the salesgirl 10 yuan. How much should she get back?
(4) The average depth of the Atlantic Ocean is 3.627km, the Indian Ocean is 0.27km, and the Pacific Ocean is 0. 13 1 km. What is the average depth of the Pacific Ocean?
(5) There are two cows. Hua Niu produces 4.8 kg of milk every day, which is 0.8 kg less than another kind of flower milk. How many kilograms of milk do these two cows produce every day?
(6) Mom bought a bottle of salad oil, which weighs 3.4 kilograms. Half of it is used, and the bottle weighs 1.9 kg. What is the initial net weight of this bottle of oil?
(7) Uncle Wang vertically inserted a 4-meter-long bamboo pole into the fish pond. The mud-soaked part of bamboo pole is 0.5m, and the dew part is1.24m.. How deep is the fish pond?
(8) The grain depot purchased 23,400 tons of corn and 3 1.200 tons of sesame.
(1) How many ten thousand tons of corn and sesame seeds did the grain depot buy? (2) How many tens of thousands of tons of corn purchased by the grain depot are less than sesame seeds?
(9) Look at the data and answer the questions?
Xiao Ming Xiaohua Xiao Qiang Xiao Li.
Weight is 42.7kg 40.8kg 35.8kg 39.6kg.
(1) Who is the heaviest of the four students? Who has the lightest weight? How many kilograms is the heaviest one heavier than the lightest one?
(2) Please estimate the average weight of the four of them in kilograms?
(3) What other math questions can you ask?
People's education printing plate elementary school mathematics fourth grade first volume midterm examination questions 3 1, mental arithmetic. (3 points)
9-7.0 1= 3.2-0.32= 2.8+ 1.2-2.8+ 1.2=
8.7+7.8= + 1. 1= +( )= 1
(Fill in decimal places in brackets)
Second, vertical calculation (※ check). (3 points)
6 13.84+ 16.9 16= ※ 10.34-0.234=
Third, find the unknown X. (6 points)
8.25+X = 10 X-5.8 = 5.8 12.5+X = 7.43+5.27
Fourth, recursive equation calculation. (16)
32.84+52+27.54 27.8+8.56-7.268+0.732
3 1.6-(5.08+7. 13)-5.08 40-(3.5-2.85+ 1.86)
Fifth, the title. (10)
Subtract 4.25 twice in a row. How much is 19.25 greater than 3.87?
How much smaller is the difference between the largest two digits and the largest two decimals than 100?
Part II Application (55 points)
1, simple calculation. (8 points)
5.262+7.38+4.738+2.62 1.2 18×45+55× 1.2 18
2. Judges. (3 points)
(1) To reduce a number by 1000 times, just move the decimal point three places to the right.
( )
⑵582÷6=5.82÷0.06 ( )
(4) The addition and subtraction of decimals, like the addition and subtraction of integers, are all aligned with the last digit.
( )
Step 3 choose. (3 points)
(1) Write a number, the hundredth digit is 6, the hundredth digit is 7, and all other positions are 0 as a decimal ().
A.B. 6.07 C. 600.007 D. 6.7000
(2) When calculating 57.6× 100, if you forget the decimal point, it is more practical to multiply it ().
A. magnification 10 times B. magnification 100 times C. reduction 10 times D. reduction 10 times.
(3) Ranked 7045 grams, 7.054 kilograms, 7 kilograms, 5 grams and 7.4 kilograms, and ranked third from small to large is ().
A.7045g b.7.054kg c.7kg 5g d.7.4kg。
4. Fill in the blanks. (5 points)
① 128 0.0 1 Yes (); 0. 12 includes () 0.00 1.
(2) If 0.2 after the decimal point is removed, the number obtained is () times larger than the original number; Rewrite to two decimal places is (); According to the classification of decimals, it is () decimal.
(3) Specific dimensions
0.083× 1000÷ 100 0.083× 10× 10
965,000 tons and 96,500 tons
40㎡4 d㎡ 40.4 d㎡
(4) A decimal number is expanded by 1000 times and then reduced by1000 times, which is a two-digit decimal number. Initially, this decimal number was a decimal number with () digits.
5] Use 3, 4, 0, 7, and the difference between the largest pure decimal and the smallest decimal is ().
5. Application questions. (36 points)
(1) Hu Jia Expressway is 15.9 kilometers long, and its two ends are 4.6 kilometers long. How many kilometers is this highway?
Xiaopang set off from Shanghai by train and went to a small town 600 kilometers apart. The journey 150 km took three hours. How many hours does it take to reach the finish line?
(3) Newly built expressway, completed167km, 25km less than the other three times. What is the total length of this highway?
(4) A road maintenance team has to build 6.5 kilometers of roads in three days. It is known that 1.94 km was built on the first day and 0.58 km was built on the second day. How many kilometers were built on the third day?
5] The master processes 200 parts every day, and the workload of the apprentice in five days is equal to that of the master in four days. How many days does it take for the apprentice to complete 1 120 parts by himself?
[6] Xiaoya spent 32 minutes climbing the mountain. She walked 60 meters per minute when going up the hill, and it only took 12 minutes when going down the hill. How many meters does she walk down the hill every minute?