Review questions at the end of the first grade (1)
Class name score
I. True or false: (12)
1. The equation x+y = 0 is a binary linear equation ().
2. This solution is the solution of equation X-6Y+4 = 0. ()
3. Know x>y, then-X.
4. Inequality 4x-()
5. If two angles are adjacent complementary angles, they must be complementary. ()
6. If two angles are not equal, then they are not antipodal angles. ( )
7. Two straight lines are cut by the third straight line, which are complementary to the lateral inner angle ()
8. if a‖b, b‖c, then a‖c ()
9. Integer solutions of inequality are: 0, 1, 2, 3, 4. ( )
10. if A > B and c=d, then AC÷BD ()
1 1.a3+a3=a6，(b3)2=b6()
12. Polynomials are completely flat ()
Two. Fill in the blanks (24 points)
1, calculation: 2, calculation:
3. Calculation: 4. Calculation:
5, decomposition factor:
6, with scientific notation:
7. It is known that x= 1y=-8 is the solution of equation 3mx-y=- 1, then m = _ _ _ _ _ _ _ _ _
8, if it is completely flat, then m=
9. Fill in the blanks by reasoning
As shown in the figure, ef ‖ ad, ∠ 1 = ∠ 2, ∠ BAC = 70. Complete the process of finding ∠AGD.
Because EF‖AD,
So ∠ 2 = _ _ _ _ _ (_ _ _ _ _ _ _ _).
Because ∠ 1=∠2
So ∠1= ∠ 3 (_ _ _ _ _)
So AB \\_ _ _ _ _ _(_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
So ∠ BAC+_ _ _ _ _ =180 (_ _ _ _ _ _ _ _ _ _ _ _ _)
Because ∠ BAC = 70, ∠DGA=
Three. Multiple choice questions: (24 points)
1, the following formula is correct ()
A (b)
C D
2. If the complementary angle of an angle is its complementary angle, then the angle is ().
60? b、45？ c、30？ d、900
3. In a math test, 10 papers were randomly selected, and the results are as follows:
85,8 1,89,8 1,72,82,77,8 1,79,83。
Then the mode, average and median of this set of data are () respectively.
A.8 1，82，8 1 B. 8 1，8 1，76.5 C. 83，8 1，77 D. 8 1，8 1，8 1
4, as shown in the figure, the following reasoning, the correct is ()
a、∠A+∠D= 180 ,∴AD‖BC
b、∠C+∠D= 180 ,∴AB‖CD
c、∠A+∠D= 180 ,∴AB‖CD
d、∠A+∠C= 180 ,∴AB‖CD
5. If the solution set of inequality group is x>2, then the value range of X is ().
a、x & gt2 B、x & lt2 C、x 2 D、x 2
6, the following formula is suitable for the use of square difference formula is ()
A(2a+b)(2b-a) B。
C.(3x-y)(-3x+y) D.(-m-n)(-m+n).
7, can clearly show the relationship between parts and the whole statistical diagram is ()
A. Bar chart B. Line chart C. Fan chart D. Unable to determine
8. Observation formula: 2 1 = 2, 22 = 4, 23 = 8, 24 = 16, 25 = 32, 26 = 64, 27 = 128, 28 = 256, …, according to the above formula.
a、8 B、6 C、4 D、2
IV. Answering questions: (40 points)
1, calculation: 2, (x+y+z)(x-y-z)
2. Solve the inequality 1+> 5- and express the solution set on the number axis:
3 Solving equations (inequalities)
four
4. Factorization
( 1) (2)
5. According to the given information, calculate the price of each kitten and puppy respectively.
Buy a * * * to 70 yuan
Buy a * * * to 50 yuan
6. The taxi pricing rules in a city are as follows: within 3 kilometers, the starting price is 8 yuan;
Excess, per kilometer 1.20 yuan. One day, Miss Li and three students went to visit a teacher.
The sick students pay by taxi 17.60 yuan. How many roads did they walk?
7. Known, as shown in the figure: AB‖DE, ∠A = ∠D, verification: AC‖DF.
8. Choose a topic: As shown in figure AB‖CD, discuss the relationship between ∠APC and ∠PAB and ∠PCD in the following four figures respectively. Please select an obtained relationship to explain. (Please add auxiliary lines as appropriate)