Sasi Math (Revised for 1024)

Scroll:Numbers >> Identify rational and irrational numbers >> mcq (4099)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.

Is $\frac{4}{9}$ a rational number

1) yes
2) no

( )

Which of the following is a rational number

1) 5
2) 2
3) 9
4) all the choice correct

( )

Which of the following describe 5.406 Select all that apply.

1) irrational number
2) rational number

( )

Is
3

1

9
a
rational
number

1) yes
2) no

( )

Is $\frac{1}{9}$ a rational number

1) no
2) yes

( )

Which of the following is a rational number

1) 4
2) all the choice correct
3) 7
4) 1

( )

Which of the following describe 7.374 Select all that apply.

1) rational number
2) irrational number

( )

Is
3

4

7
a
rational
number

1) yes
2) no

( )

Is $\frac{3}{9}$ a rational number

1) no
2) yes

( )

10)

Which of the following is a rational number

1) 8
2) all the choice correct
3) 2
4) 4

( )

Is $\frac{4}{9}$ a rational number

1) yes
2) no

Answer: 1

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

\frac{4}{9}

is a fraction. So,

\frac{4}{9}

is a rationa lnumber.

Which of the following is a rational number

1) all the choice correct
2) 5
3) 9
4) 2

Answer: 1

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

2 can be written as

\frac{2}{1}

which is afraction. So,2 is a rational number.

5 can be written as

\frac{5}{1}

which is afraction. So,5 is a rational number.

9 can be written as

\frac{9}{1}

which is afraction. So,9 is a rational number.

the rational numbers are 2, 5, 9

So, answer is all the choice is correct

Which of the following describe 5.406 Select all that apply.

1) rational number
2) irrational number

Answer: 1

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

5.406 is a terminating decimal. So, 5.406 is a rational number.

Since 5.406 is a rational number,it is not an irrational number.

Is
3

1

9
a
rational
number

1) no
2) yes

Answer: 2

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals, rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$
( where a and b are integers and b is not zero).When writtenas decimals, irrational numbers do not terminateor repeat.

Solve:

3

1

9
can
be
written
as
28

9

,
which
is
a
fraction. So,
3

1

9
is
a
rational
number.

Is $\frac{1}{9}$ a rational number

1) yes
2) no

Answer: 1

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

\frac{1}{9}

is a fraction. So,

\frac{1}{9}

is a rationa lnumber.

Which of the following is a rational number

1) all the choice correct
2) 1
3) 4
4) 7

Answer: 1

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

1 can be written as

\frac{1}{1}

which is afraction. So,1 is a rational number.

4 can be written as

\frac{4}{1}

which is afraction. So,4 is a rational number.

7 can be written as

\frac{7}{1}

which is afraction. So,7 is a rational number.

the rational numbers are 1, 4, 7

So, answer is all the choice is correct

Which of the following describe 7.374 Select all that apply.

1) irrational number
2) rational number

Answer: 2

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

7.374 is a terminating decimal. So, 7.374 is a rational number.

Since 7.374 is a rational number,it is not an irrational number.

Is
3

4

7
a
rational
number

1) no
2) yes

Answer: 2

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals, rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$
( where a and b are integers and b is not zero).When writtenas decimals, irrational numbers do not terminateor repeat.

Solve:

3

4

7
can
be
written
as
25

7

,
which
is
a
fraction. So,
3

4

7
is
a
rational
number.

Is $\frac{3}{9}$ a rational number

1) no
2) yes

Answer: 2

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

\frac{3}{9}

is a fraction. So,

\frac{3}{9}

is a rationa lnumber.

10)

Which of the following is a rational number

1) 8
2) 2
3) 4
4) all the choice correct

Answer: 4

SOLUTION 1 :

Rember:

Rational numbers can be writtenas $\frac{a}{b}$

(where a and b are integers and b is not zero).When written as decimals , rational numbers terminate or repeat.

Irrational numbers cannot be written as $\frac{a}{b}$

( where a and b are integers and b is not zero). When written as decimals , irrational numbers do not terminateor repeat.

Solve:

2 can be written as

\frac{2}{1}

which is afraction. So,2 is a rational number.

4 can be written as

\frac{4}{1}

which is afraction. So,4 is a rational number.

8 can be written as

\frac{8}{1}

which is afraction. So,8 is a rational number.

the rational numbers are 2, 4, 8

So, answer is all the choice is correct