Grade 9 - Number-System

(Sample Online worksheet)

Choose correct answer(s) from given choice

1)If 'm' is an irrational number than 'nm' is _______________ where 'n' is an integer.

a. a rational or an irrational number b. an irrational number
c. a rational number d. whole number
2)Is variable x in x2=0.16 represents a rational or irrational number ?
a. Rational b. Irrational
3)An example of a rational number between and is
a. 2.8 b.
c. 3.9 d.
4)A rational number equivalent to  
-6
-6
  is
a.  
30
-30
 
b.  
-30
30
 
c.  
30
30
 
d. None of these
5)Express the number 0.42523 in the form of  
p
q
  and reduce it to the lowest terms.
a.  
523
999
 
b.  
42523
100000
 
c.  
42481
99900
 
d.  
42523
99999
 
6)If a and b are rational numbers such that , than the possible values of a and be are :
a. a =  
1
 , b =  
1
 
b. a=0, b=0
c. a=0, b=0 OR a =  
1
 , b =  
1
 
d. a =  
1
 , b =  
1
 

Fill in the blanks

7)There are number of rational numbers between any two non equal rational numbers.
8)The rational number that does not have a reciprocal is
9)Every number on the number line represents a number which is either or .
10)The rational number that are equal to their reciprocals are & .
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