MATH QUIZ FOR 9TH GRADE

Problem 1 :

The scientific notation of the number 0.00005896 is

(A) 5.896 x 10-5
(B) 5896 x 105
(C) 58.96 x 10-4


Solution

Problem 2 :

The decimal form of the number 5.243 × 10-6  is

(A) 5.243
(B) 0.000005243
(C) 0.05243

Solution

Problem 3 :

Which of the following is the decimal expansion of 10/3?

(A) 333.33………
(B) 33.333………
(C) 3.3333………

Solution

Problem 4 :

Find the value of log5 5.

(A) 2
(B) 0
(C) 1

Solution

Problem 5 :

Which of the following is an irrational number between 1/7 and 2/7?

(A) 0.3500…
(B) 0.4501…
(C) 0.1501…

Solution

Problem 6 :

If U  =  {x/x < 10, x∈N},

A  =  {x/x < 9, x is even N}

B  =  {x/x ≤ 8,x is prime N},

find  A-B

(A) {4}
(B) {4,6,8}
(C) {6,8}

Solution

Problem 7 :

2 √2 + 5 √3 and √2 - 3 √3

(A) √3 - 2√2
(B) √2 + 2 √3
(C) √2 - 2 √3

Solution

Problem 8 :

Simplify (5 + √5) (5 - √5)

(A)10
(B)5
(C)20

Solution

Problem 9 :

What is the degree of the polynomial 2 - y2 - y3+ 2y8

(A) 8
(B) 2
(C) 3

Solution

Problem 10 :

What is the value of the polynomial

p(x)  =  5x2-3x+7 at x = 1 ?

(A) 8
(B)9
(C) 6

Solution

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