MATH PRACTICE TEST FOR 8TH GRADE ONLINE TEST

Question 1 :

Find the maximum value of quadratic function

n 2  - 6n - 55 

(A) -64               (B) 55              (C) -48

Solution

Question 2 :

Find a rational number between 3/4 and 4/5

(A) 21/40          (B) 31/40        (C) 41/40

Solution

Question 3 :

Simplify (1 - (1/2)) + (3/4 - 1/4)

(A) 1          (B) 0        (C)  2

Solution

Question 4 :

Cube root of 125/256

(A) 5/4          (B) 25/4          (C) 5/6

Solution

Question 5 :

Find the smallest number by which 81 must be divided to obtain a perfect cube.

(A) 2          (B) 3          (C) 4

Solution

Question 6 :

Find the fifth term of the sequence whose second term is 8 and third term is 14.

Solution

Question 7 :

Find AC when AB  =  15 cm, AD  =  10 cm, AE  =  8 cm

(A)  12 cm       (B)  10 cm        (C)   13 cm

Solution

Question 8 :

Angle ABC measures 250°, find the measure of minor of arc AC.

(A)  150°          (B)  110°         (C)  140°

Solution

Question 9 :

Find the mean of all odd numbers between 80 and 88.

(A) 84            (B) 30             (C) 62

Solution

Question 10 :

The number of times a particular observation occur in a data is called its __________

(A) Frequency          (B) Mean         (C) Median

Solution

Answers

(1)  15

(2)  260 days

(3) 279 km 

(4)  70 meter

(5)  45° and 60° 

(6)  12%

(7)  12 cm

(8)  110°

(9)  84

(10)  Frequency

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