The fourth grade, the next volume, mathematics, the last volume.
1. Fill in the blanks (1- 12 is 1, 13- 14 is 2, * * 26).
1. In order to keep families in poor mountainous areas warm for the winter, where did a truck transport the warm materials? Each shipment 15 tons, n times, * * * tons. When n=6, the truck carries () tons.
2, a factory x tons of raw coal, burned for t days, burned a ton every day, and there are () tons left.
A book has m pages, and Xiaoming reads 8 pages every day. After reading it all day, there are () pages left.
4. The length of a rectangle is a, the width is b, the circumference is () and the area is ().
5. Letters indicate that the multiplicative commutative law is () and the multiplicative distributive law is ().
6. The base angle of an isosceles triangle is 75? The top angle of an equilateral triangle is (), each inner angle is (), the circumference is 24 cm, and the side length is () cm.
7. One acute angle in a right triangle is 40 degrees, and the other acute angle is () degrees.
8. Make a triangle with three sticks. Given that the lengths of two sticks are 10 cm and 5 cm respectively, the longest length of the third stick is () cm.
9, triangle has the characteristics of ().
10 and 76.74 are pronounced as (); To the left of the decimal point? 7? In the () position, it means 7 (); On the right? 7? In the () position, it means 7 ().
1 1 and 0.079 are written as (), and the counting unit is ().
12. Move the decimal point of a decimal number one place to the left, and the number will be reduced to its ().
13, compare the size of the following groups of two numbers.
5.32 ○ 5.23 5.40 ○5.4 0.7 1 ○ 0.70 1 1
14 and 8.076 include () 1, () 0. 1 and () 0.0 1.
Second, discerning right from wrong. (8 points)
1, 6.65 and 6.6599 all have 6.7 ().
2. Add a 0 after the decimal point, and this number will be expanded to 10 times. ( )
3、87? 20 1=87? 200﹢ 1 ( )
4. A right triangle has only one height. ( )
5. Decimals greater than 0.5 and less than 0.7 only take 0.6. ( )
6.a2 and 2a have the same meaning. ( )
7. The longer the two sides of the angle are drawn, the greater the degree of the angle. ( )
8, 0.3 and 0.30 have the same size and the same counting unit. ( )
Choose the correct answer and put the serial number in brackets. (6 points)
1.99.998 Keep two decimal places and record it as ().
a . 99.00 b . 100.00 c . 99.99d . 99.90
There are 38 people in the car, then A goes down and B comes up. There are () people on the bus now.
48-a-b B.48+a-b C.48-a+b D.48+a+b
There are two acute angles in the triangle, so the third angle ()
A. It's also an acute angle. B must be a right angle. C must be an obtuse angle.
4. Move the decimal point two places to the right and then three places to the left. This number is (). A. the size is unchanged. B. expand to the size of 10 times.
C. reduce to d, reduce to
5. The following figures are not 6 after keeping the integer ().
A.B.5.905 C.6.059 D. 6.59
6. Cut a 20 cm thin iron wire into three sections and make it into a triangle. Which of the following cutting methods is ok? ( )
A, 8 cm, 7 cm, 5 cm; b， 13cm，6cm， 1cm；
C, 4 cm, 9 cm, 7 cm; D,10cm, 3cm, 7cm.
Four. Calculation (26 points in total)
1, write the number directly (4 points)
45+ 155= 30? 5= 25? 4? 17= 50? 2? 49=
567-77= 125? 8= 75? 3= 125? 8? 6=
2. How to make the calculation as simple as possible (2 items per question, *** 18★)
560-397 435? 8+565? 8 99? 83+83
69? 10 1 1800? 25? 4 25? 8? 4? 125
125? 88 8? (29? l25) 156？ l0l- 156
3. Find the degrees of the following angles. (4 points for each question)
( 1)? 1=42? ,? 2=38? , beg? The degree of 3.
(2)? 1=28? ,? 2=62? , beg? The degree of 3.
Fifth, draw a picture. (***4 points)
ab blood type
Please draw a 70 with a vertex first. Angle, and then draw a 60-degree angle with b as the vertex. Then form a triangle. Finally, draw the height of the triangle with AB as the base.
Solving problems with intransitive verbs (***30 points, 6 points for each question)
1. On the way to the amusement palace, Xiaojun took 5 minutes to climb the hill, walking an average of one meter per minute; It took 4 minutes to go down the mountain, walking an average of B meters per minute.
(1) How many meters did Jun Yi * * * walk?
(2) When A = 30m and B = 40m, how many meters did Xiaojun walk?
Zhao Hua and Li Ming took part in the long-distance running. Zhao Hua runs 65,438+078 meters per minute on average, while Li Ming runs 65,438+053 meters per minute on average.
(1) How many meters does Zhao Hua run more than Li Ming in one minute?
(2) When a=8, how many meters did Li Ming run less than Zhao Hua?
3. Two construction teams, A and B, build a highway from both ends respectively. It takes 16 days for Team A to repair 53 meters and Team B to repair 47 meters every day. How long is this road?
4. The 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?
5. An isosceles triangle with a base angle of 35 degrees. So, what is its vertex angle?
Grade four, volume two, mathematics volume two, and final volume two.
First, oral calculation:
88? 22= 400? 50= 10 1+99= 50? 60= 25? 40=
23? 30= 8 1? 3= 120-26= 540? 90= 770? 7=
78? 3= 69+3 1= 15? 40= 18? 5= 64? 32=
200+22? 4= 40+20? (2+2)= 14? 2? 4=
25? 5? 5= 45+38-45+2= 150-20? 5+25=
Second, the written calculation:
358? 67= 309? 13= 3 15? 3= 48? 290=
Third, use recursive equation to calculate:
(84 1-4 1)? 25? 4 560? [490? (34+36)]
360? (30+30)? 2 224? [(2+6)? 2]
Simple calculation:
3? (8? 7)? 125 10 1? 99 37+37? 39
32? 25 20 1? 42-42 199+ 199? 99
Fourth, fill in the blanks:
1, specific size: 260? 24○350? 25 270? 12○27? 120
467? 99○9? 10? 467 16? 78○78? 2? eight
990 ml 02 l 6000 ml 09 l 3 l 2900 ml
2. Choose:
The capacity of a washbasin ()
A, 2 liters of B, 20 liters of C, 200 liters
(2)603? The product of 35 is about ()
A, more than 10,000 b, more than 20,000 c, more than 1,000 d, and more than 2,000.
(3) Cut a 20 cm thin iron wire into three sections to make a triangle. Which of the following cutting methods is ok? ( )
A, 8 cm, 7 cm, 5 cm; b， 13cm，6cm， 1cm；
C, 4 cm, 9 cm, 7 cm; D,10cm, 3cm, 7cm.
(4) The sum of the internal angles of the trapezoid is (). Cut it into two small trapezoid, and the sum of the internal angles of each small trapezoid is ().
a、 180？ 、90? ; 360？ 、 180? ; c、360？ 、360? ; D, uncertain
3. Pour 4 liters of water into a 500 ml measuring cup and pour the cup.
The product of the largest three digits and the smallest two digits is.
5. Use a formula containing letters to express the algorithm:
Multiplication commutative law addition associative law
Powder companion
6. Calculate the degrees of unknown angles and write down what triangles they are:
( 1)? 1=42? ,? 2=38? ,? 3=( )
(2)? 1=27? ,? 2=63? ,? 3=( )
? 1 and? 2 is two acute angles in a right triangle. 1=35? ,? 2=( )
Is the base angle of an isosceles triangle 55 degrees? Its vertex angle is ()
Xiao Ming drew a vertex angle 100? An isosceles triangle with a base angle of ()
All three sides of a triangle are 3 cm, and one of the angles is ().
7. What different figures can be obtained by dividing the trapezoid into two? Draw a picture and write it down:
8.3, 7 and 8 can form () different three digits.
Verbs (short for verb) solve practical problems:
1. The downtown gymnasium used to have 58 rows of seats, and the average number of seats in each row was 169. After the expansion, 35 rows of seats will be added. How many more people can sit?
2. Fruit shops deliver apples 15 boxes, pears 12 boxes, apples 15 kg per box, pears 18 kg per box. How many kilograms of apples and pears were delivered?
A newsstand sold 735 newspapers last week. According to this calculation, how many newspapers can be sold in March?
4. Master Wang processed 105 parts in 3 hours. According to this calculation, how many parts can Master Wang process in 2 hours?
5. A chair 55 yuan, a table is more expensive than a chair, and a sofa is twice as expensive as a chair and a table combined. How much is a sofa?
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