People's education printing plate fourth grade second volume mathematics final simulation volume one
I. Fill in the blanks: (***20 points)
1, in a triangle, 1= 105? ,? 2=25? And then what? 3= (), which is a () triangle; Is the base angle of an isosceles triangle 60? Its vertex angle is (), and this triangle is () triangle.
2,0.018 is one thousandth of (); Nine percentage points is written as a decimal ().
3. Enlarge 1.8 times 1000 is (), and reduce it to one thousandth is ().
4. Use 0, 1, 2,3 and decimal point to form the largest decimal point () and the smallest decimal point ().
5, 306900 change of use? Wan? The unit number is (). How about 387,330,000? Billion? The number of units is ().
6. Move the decimal point of a decimal to the right by two places and then to the left by three places, and the number obtained is more than the original number ().
The number of 7.5 0. 1, 6 0.0 1, 8 0.00 1 is ().
8, 95 decimeters = () meters, 5432 meters = () kilometers.
480 hectares = () square kilometers 6500 square meters = () hectares
5.005 hectares = () hectares () square meters, 4.05 kilometers = () kilometers () meters.
9、 1.96? () (accurate to ten places); 3.068? () (keep two decimal places).
7.995? () (accurate to the tenth place), 7.99596? () (keep two decimal places)
7.99986? () (keep three-dimensional decimal)
10, the sum of the internal angles of a triangle is () degrees, and the sum of the internal angles of a rectangle is () times that of a triangle.
Second, the calculation problem (36 points).
1, oral calculation: (6 points)
3.64+0.48= 50-37.5= 1 1.6+ 1.4= 60? 5= 48? 8? 9= 400? 6=
1 1? 800= 0? 60? 12= 2.5+0.9= 0.39+0.6 1= 528-53-47=
192- 128= 4 1.5-4 1.5= 360? 30= 5? 99+5= 0.058? 100=
2. Calculate and check the following questions: (6 points)
4 1.2- 15.6 2 1.56+6.74
3. Calculate the following questions: (What can be simplified should be simplified) (18 points)
6.7+25+3.3+75 103? 12 14.85-(4.85+2.5)
15? 99+ 15 9. 14- 1.43-4.57 2000? 125? eight
4. Title: (6 points)
(1) What is the sum of 5.38 plus the difference between 9.36 and 3.72?
(2) It is known that the sum of two numbers is 85.7, and one addend is 15.7.
What is the other addend?
Third, judge the question. (6 points)
1.A+B+C=A+(B+C).( )
2. supplement? 0? Or remove it? 0? The size of the decimal remains the same. ()
3.0.596 The reserved two decimal places are 0.6. ( )
4.0. Both 80 yuan and 0.8 yuan indicate an angle of 8. ( )
5.7.6 Expand 100 times, and then reduce 10 times, which is 76.4. ( )
6. Because 0.3=0.30, the meaning expressed is the same. ( )
Four. Operation problem: (8 points)
(1) Draw a right-angled isosceles triangle and find the degrees of the other two angles of the triangle. (4 points)
3 (2) Draw the height of each base of the triangle below. (4 points)
Fifth, the application problem. (22 points)
1, Zhuhai taxi starting price is 3km, 7 yuan. If it exceeds 3km, it will be charged 1 yuan for each additional 1km. If it is less than 1km, please fill in the following table: (4 points).
Distance (km) 3 4 5 .6 8 Charge (RMB)
2. The surface area of the earth is 5 10/00000 square kilometers, of which the land area is1490000 square kilometers. How many billion square kilometers is the ocean area more than the land area? (4 points)
One wire needs 32.87 meters, which is 8.99 meters more than others. How long is this wire? (4 points)
4. Party A 14.8 yuan and Party B 15.2 yuan. They want to buy a football together. The price of a football is twice their money. How much is a football and how much do they lack? (5 points)
5 100 kg rapeseed can extract 2 1.6 kg oil. According to this calculation, how many kilograms of oil can be extracted from 1 ton rapeseed? (5 points)
People's education printing plate fourth grade second volume mathematics final simulation volume two
Fill in the blanks. ( 16%)
For 1 and 8.745, one decimal place is (8.7), and 0.398 is accurate to one percent (0.40).
2, 3 10.04 pronunciation (310.04); Write it at 0.307 (0.307).
3.5.903 consists of (5) 1, (9) 0. 1, (0) 0.0 1 and (3) 0.00 1.
4. Move the decimal point three places to the right and then two places to the left. This number is 40.9. It turns out that this decimal is (4.09).
5. Triangle is (stable); The sum of the internal angles of a triangle is (180? )。
6. 48? 98+48? 2. The multiplication and distribution law can make the calculation simple.
7. Without changing the number size, rewriting 4.5 into three decimal places is (4.500).
8. The base angle of an isosceles triangle is 350 and the top angle is (1 10) degrees.
9. A piece of wood is 6 meters long and needs to be sawed into 4 sections. Saw for 5 minutes in each section, one * * *( 15) minute.
Second, the judgment question. (correct drawing? , wrong painting? )(6%)
When 1. represents an approximation, the zero after the decimal point cannot be deleted. (? )
2. The law of multiplication and distribution is expressed in letters as (a+b)c=ac+bc? (? )
3. Every inner angle of an equilateral triangle is 60 degrees. ? (? )
4. The minuend is equal to the minuend, and the difference must be 0. (? )
Three identical right triangles can be used to form a trapezoid. (? )
6,0.078 expansion 100 times is 78. (? )
Third, multiple choice questions. Fill in the brackets with the correct answers. )(6%)
1, the sum of any two sides of a triangle (②) the third side.
① equal to ② greater than ③ less than ④ greater than or equal to.
2, 0.0385 accurate to (4) is 0.039.
① Decimal ② Percentile ③ Bit ④ thousand.
3. The number less than 6.98 is (④).
① 7 ② 6.980 ③ 6.99 ④ 6.890
4、78? 99 calculated by a simple method is (②).
① 78? 100+78? 1 ② 78? 100-78
③ 78? 100+ 1 ④ 78? 100- 1
5. Rewriting to decimal is (③).
① 0. 13 ② 0. 130 ③ 0.0 13 ④ 0.00 13
6. There is a chicken, a duck, a goose and a dog, each weighing 28kg. Chickens are as heavy as ducks, geese are three times as heavy as ducks, and dogs are three times as heavy as geese. Goose weight (③).
① 2kg ② 8kg ③ 6kg ④ 18kg
Fourth, calculation.
1, oral calculation. (6%)
0.36+0. 14= 7.2-5.8= 1-0.4=
1-0.08= 4.8+3. 12= 0.0 1+0. 1=
3.9+4.4+5. 1= 4.7-0.47- 1.43= 102? 5=
25? 17? 4= 120? 5? 2= 20-20? 5=
2, with vertical calculation, and checking. (6%)
48.5+47.25= 20.8-6.48=
People's education printing plate fourth grade second volume mathematics final simulation volume three
1. In an equation without brackets, if there is only addition, subtraction or multiplication and division, operations should be performed in the order of (); If there are addition, subtraction, multiplication and division, calculate () first and then ().
2. In the formula, brackets should be calculated after ().
3,0 cannot be counted as ().
4. The additive associative law is expressed by letters as (a+b)+c= ().
5. Does the multiplication table represent a with letters? (b+c)=().
6,21.003 is pronounced as ()
7. Written at 6: 088: ()
8. A number is 3 in decimals and percentiles, 0 in decimals and digits, and this number is ()
9,0.8 is one eighth (). 0.32 is () one percent.
10, in (), fill in? & gt？ 、? & lt？ Or? =? .
2 1? 1( )2 1+ 1 12? 5+5( ) 12? (5+5)
84? 12? 2( )84? ( 12? 2) 123-23+77( ) 123-(23+77)
56? 99+ 1( )56? (99+ 1)
1 1, the lowest bit of the integer part is (), and the highest bit of the decimal part is (), and the ratio between them is ().
Third, I can judge, fight? Wrong number? (5 points) 1, (125+8)? 8= 125? 8+8 ( )
2, 65+75+25=65+(75+25), which is the associative law with addition. ()
The counting unit of 3.0.09 is 0.0 1 ().
Two at the end of 4.805? 0? The size of the quantity remains the same. ( )
5、a-b-c=a-(b+c)()
Fourth, I will choose. (5 points)
1, the second place to the right of the decimal point is ()
A. Decimal percentile
2. Read 40.06 as ()
4006
3. Count 25? 166? 4=25? 4? 166= 100? The algorithm used in 166= 16600 is ().
A. Multiplication distribution law B. Multiplication exchange rate C. Multiplication association law
4、7 15? The simple algorithm of 99 is ().
a、7 15？ 90? 9 B、7 15？ 100+7 15 C、7 15？ 100-7 15
5. Xiao Fang 25? Direction 200 meters, then Xiaohua is 200 meters in the direction of Xiaofang ().
A. south by west 75? B. 25 degrees east of north? C. south by west 25?
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