8TH GRADE MATH PRACTICE TEST

Question 1 :

Find the smallest number by which 3087 should be multiplied to obtain a perfect cube. 

(A)  4              (B)  3               (C)  5 

Need solution

Question 2 :

11025 students are sitting in a lawn in such a way that there are many students in a row as there are rows in lawn. Find the number of rows in the lawn.

(A)   205              (B)   105           (C)   115

Need solution

Question 3 :

Evaluate (243) -2/5 

(A)   1/5             (B)   1/7           (C)   1/9

Need solution

Question 4 :

Evaluate (52 + 122)1/2

(A)  17          (B)   15         (C) 13

Need solution

Question 5 :

If a + b + c = 9 and ab + bc + ca = 23, find the value of a2 + b2 + c2

(A)  35        (B)  45         (C)  55

Need solution

Question 6 :

What is the degree of the polynomial 4 + 3x - 7 x3 + 5 x4

(A)  4         (B)  3        (C)  1

Need solution

Question 7 :

Solve the following 3x / (2x - 5) = 12/5

(A)  40 kg     (B)  36 kg     (C)  50 kg  

Need solution

Question 8 :

The numerator of a rational number is less than its denominator by the number 3. if the numerator becomes three times and the denominator is increased by 20, the new fraction became 1/8. Find the required fraction. 

(A)  1/3                (B)   1/2              (C)   1/4

Need solution

Question 9 :

In a circle with center O and the radius 13 cm, AB is a chord of length 24 cm.Find the distance between the chord and the center. 

(A)  6 cm               (B)   8 cm              (C)   5 cm

Need solution

Question 10 :

Find the value of x ° if the lines AB and CD are parallel to each other

(A)   0°               (B)   180°            (C)   225°

Need solution

Answer Key

(1)  3 

(2)  105

(3)  1/9  

(4)  13

(5)  35 

(6)  4  

(7)  20/3

(8)  1/4  

(9)  5 cm

(10)  285°

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