First Question: Put (√) or (x) in front each statement:
1) The symbol of empty set is
(
)
2) Indefinite set is a set with unlimited elements
(
)
3) ¯ 7 ∈ I
(
)
4) One is the Identity property of the addition
(
)
5) U ∩
(
)
6) 3 + 0 = 3, according to Iden ty property of the addi on
(
)
7) 4 + 2 x 5 = 15
(
)
8) ¯ 3 < ¯ 7
(
)
9) { 1 , 5 } = { 5 , 1 }
(
)
10) In Algebraic expression 5xy, coefficient of x = 5y
(
)
11) Three me of the number 5 is 11
(
)
12) Sum of angles triangle is 180°
(
)
13) Sum of angles square is 360°
(
)
14) ¯ 3 x ¯ 4 = ¯ 12
(
)
=U
Second Question: A- Mention each property for the following operations:
a) 5 + 8 = 8 + 5
_______________ property
b) 1 + 0 = 1
_______________ property
c) 3 ( 7 + 1) = 3 × 7 + 3 × 1
_______________ property
d) 10 + ¯ 10 = 0
_______________ property
B- Put a ring around the letter of the correct answer:
1- The addi ve inverse of 6 is
a) 6
b)¯ 6
c)
d)All what have mention incorrect
2- Number of elements of the empty set is:
a) Zero element
b)One element
c)Five element
d)Unknown
3- 0.75 equal :
a) 75 x 100
b)
x 100
c)0.075
d)
C- 1- Fadal and Gareeb shared 200 SDG, if Fadal took 40% of 200SDG, How
much did Gareeb got?
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2- Compare between the percentages, the fractions and the decimals by putting ( < , >
or =)
a) 75%
b) 80%
c) 25%
0.8
Third Question: 1. Do the following operations:
a) 10 + ( ¯ 11 ) = _______
b) ¯ 19 + ( ¯ 5) = _______
c) ¯ 25 ÷ ¯ 5 = _______
2. If X = { 1 , 2 , 3 , 4 , 5 } , Y = { 1 , 3 , 5 }
a) Write as Roaster Notation:
i) X ∪ Y = _______________________________
ii) X ∩ Y = _______________________________
iii) X – Y = _______________________________
iv) Y – X = ________________________________
3. Write all the subset sets from the set X = { 3 , 4 }
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4. Shade the required in the following diagram
a) X ∩ Y
Fourth Question: 1- Calculate the value of the angles x, y and z:
<a = ___________________
<b = ___________________
<c = ___________________
b
c
2- Using Pythagoras theory find the length of the side ac
Where ( √49 = 7 , √36 = 6 , √25 = 5 , √16 = 4 , √9 = 3 , √4 = 2)
a
4 cm
b
3 cm
c
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