8-sinf uchun
matematika fanidan test
1.225 sonining kvadrat ildizini hisoblang A)14 B)14,5 C)15 D)16.
2.x=5 bo’lganda
√𝑥
2
− 2𝑥 + 1
ifodaning qiyma tini hisoblang A)4 B)0 C)1 D)6.
3.Taqqoslang: 2,7 va
√7
A)> B)< C)= D)
≥
.
4.
√24
qanday natural sonlar orasida yotadi?
A) 2 va 3 B) 4 va 5 C) 5 va 6 D) 4 va6 .
5.Hisoblang:
√900 ∗ 25 ∗ 1,69
A)213 B)167 C)195 D)234.
6.Hisoblang:
√5
4
∗ 3
2
A)63 B)70 C)82 D)75.
7.Ifodaning qiymatini toping:
√72
√8
+ 5
A) 4 B) 8 C) 10 D) 9 .
8.Hisoblang: (
√7
-
√28 )
2
. A)6 B)5 C)7 D)8.
9.Ifodaning qiymatini toping: 3
√48
-
√75
+
√147
A)10
√3
B)11
√3
C)14
√3
D)16
√3
.
10.Ifodani soddalashtiring:
6
√3−√2
+
6
√3+√2
A) 12
√3
B) 13
√2
C) 12
√2
D)14
√3
.
11.Hisoblang:
√11 + 4√7
+
√11 − 4√7
A) 4 B)7 C)2
√5
D)2
√7
.
12.Tenglamani yeching:
𝑥
2
-225 =0 A) X=
±15
B) X=25 C)X=
±17
D)X= 17.
13.Chala kvadrat tenglamani yeching: 25-
16𝑥
2
=0
A)x=
±4
B)x=
4
5
C)x=
±
5
4
D)x=
±5.
14.Tenglamani yeching: 2
𝑥
2
− 7𝑥 + 6 = 0
A)x1=7;x2=3 B)x1=1,5;x2=2 C)x1=3;x2=5 D)x=
±4
15.Tenglamani yeching:
𝑥
2
+ 6𝑥 + 5 = 0
A)x1=1;x2=2 B)x1=-5;x2=-1 C)x=
±2
D)x=
±
5.
16.Tomonlari 17sm,65sm,80sm bo’lgan uchbur- chak yuzini toping.
A)S=232
𝑠𝑚
2
B)S=188
𝑠𝑚
2
C)S=288
𝑠𝑚
2
D)300
𝑠𝑚
2
17.Aylana radiusiga to’g’ri ta’rif berilgan qator ni berilgan qatorni belgilang .
A)Aylanada yotgan ikki nuqtani tutashtiruvchi kesma aylananing radiusi deyiladi
B)Uchi aylana markazida yotgan burchak aylana ning radiusi deyiladi
C)Aylanada yotgan ixtiyoriy nuqta bilan uning markazini tutashtirgan kesma aylananing radiusi
deyiladi
D)Aylana markazidan o’tgan vatar aylananing radiusi deyiladi .
18.Markaziy burchakka mos
yoy aylananing
2
9
qismiga teng.Shu markaziy burchakni toping.
A)
80°
B)
90°
C)
120°
D)
110°.
19.Aylananing ichki
burchagi
78°
li yoyga tiral gan.Ichki burchak necha gradusga teng?
20.Agar teng tomonli uchburchakning balandligi 30 smga teng bo’lsa,unga ichki
chizilgan
aylana radiusini toping.