MCQ Questions for Class 6 Maths Whole Numbers Quiz 4

$a$ and

$b$ are any two whole numbers, then

$a + b = b + a$ .

0%
True
0%
False

Explanation

True, as adding two whole number will always result in a whole number and it follows commutative law.

$e.g\ 0+3=3, 3+0=3$

$5+3=8,3+5=8$

Every whole number

$+ 0 =$ The whole number itself.

0%
True
0%
False

Commutativity and associativity are properties of natural numbers and whole numbers both.

0%
True
0%
False

Every whole number

$\times 1 =$ The whole number itself.

0%
True
0%
False

Find the product of greatest

$3$ -digit number and greatest

$2$ -digit number?

0%
$98900$
0%
$98901$
0%
$98902$
0%
$98903$

Which of the following is correct representation of

$2 + 3 = 5$ on number line?

0%
0%
0%
0%
None of these

Explanation

As can be evident from the image going

$3$ steps after

$2$ yields

$5$ , which is similar in analogy to

$(2+3=5)$

2035161_1946370_ans_b44dda5a4de14bfaa6c69d3f96da4d26.PNG

Which of the following is the correct representation of

$4$ in a straight line?

0%
A
0%
B
0%
C
0%
D

The value of

$116 \times 50$ (using any numerical short cut) is

0%
$5700$
0%
$5800$
0%
$5900$
0%
none of these

Which of the three whole numbers that can be represented as triangles using dots are

0%
$2, 4, 6$
0%
$3, 6, 7$
0%
$4, 6, 9$
0%
$3, 6, 10$

Evaluate following using any shortcut:

$84 \times 9$

0%
$754$
0%
$755$
0%
$756$
0%
none of these

Find the missing term:

$736 \times 99 = 736 \times ? - 736 \times 1$

0%
100
0%
101
0%
102
0%
103

Obtain the following:

$96 \times 250$

0%
$22000$
0%
$24000$
0%
$26000$
0%
$28000$

If, A: Every whole number is a natural number

R : 0 is not a natural number.

Then which of the following statement is true?

0%
A is false and R is the correct explanation of A.
0%
A is true and R is the correct explanation of A.
0%
A is true and R is false.
0%
Both A and R are true.

Explanation

The set of whole numbers is

${0,1,2,3,......}$ where

$0$ is the least whole number.

The set of natural numbers is

${1,2,3,......}$ .

From the above statements, we conclude that every natural number is a whole number but every whole number is not a natural number because

$0$ is not a natural number.

Therefore,

$0$ is not a natural number and this proves that every whole number is not a natural number.

Hence, the statement A is false and R is the correct explanation of A.

(38 + 83) + 38 = 38 + (83 + 38) is an example of ........... property.

0%
Commutative
0%
Associative
0%
Closure
0%
Distributive

Associative property is used between ...........

0%
Two numbers
0%
Three numbers
0%
Four numbers
0%
Ten numbers

Closure property is satisfied in whole numbers w.r.t. to ......... and ......... .

0%
addition and subtraction
0%
addition and division
0%
addition and multiplication
0%
multiplication and division.

Explanation

Closure property for addition :

$a$ and

$b$ are two whole numbers and their sum is

$c$ , i.e.

$a + b = c$ , then

$c$ is will always a whole number.

For any two whole numbers

$a$ and

$b$ ,

$(a + b)$ is also a whole number. For example:

$3 + 4 = 7$ which is also a whole number.

But

$3 - 4 = -1$ which is not a whole number.

So, the property of closure for subtraction is not always true.

Closure property for multiplication :

$a$ and

$b$ are whole numbers then their multiplication is also a whole number.

For any two whole numbers

$a$ and

$b$ ,

$(a\times b)$ is also a whole number.For example:

$30\times 7 = 210$ which is also a whole number.

But property of closure is not always true for division. For example:

$45\div 0 =$ not defined

As division with zero is not possible.

Hence, closure property is satisfied in whole numbers w.r.t. to addition and multiplication.

Which of the following satisfies closure property?

0%
$3+4=7$
0%
$5+6=11$
0%
$10+2=12$
0%
all of these

Explanation

For any two whole numbers a and b, (a + b) is also a whole number. This is called the Closure-Property of Addition.

$3$ and

$4$ are whole numbers

$3+4=7$

$7$ is also whole number.

Similarly, it is true for all whole numbers.

Thus the answer is all of these.

$a$ &

$b$ are two whole numbers then commutative law is applicable to subtraction if and only if

0%
$a = b$
0%
a $\displaystyle \neq$ b
0%
$a > b$
0%
$a < b$

Explanation

$a = b$ then

$a - b = 0$ and

$b - a = 0$
so

$a - b = b - a$
Hence commutative law holds good

Simplify using distributive property:

$(126\times 33) + (126\times 67)$ is

0%
$1,260$
0%
$12,600$
0%
$1,26,000$
0%
$1,000$

Explanation

The Distributive Property is easy to remember if you recall that "multiplication distributes over addition".

Formally, they write this property as

$"a(b + c) = ab + ac".$

$(126\times 33) + (126\times 67)$

$= 126 \times (33 + 67)$ (

$\because$ distributive property)

$= 126\times 100$

$= 12,600$

Which of the following statements is correct?

0%
Subtraction is commutative for integers.
0%
Division is associative for rational numbers.
0%
Multiplication is not associative for whole numbers.
0%
Addition is closed for natural numbers.

Which of the following statements is not true?

0%
Both addition and multiplication are associative for whole numbers.
0%
Zero is the identity for multiplication of whole numbers.
0%
Addition and multiplication both are commutative for whole numbers.
0%
Multiplication is distributive over addition for whole numbers.

Explanation

In the option B,
Zero is not the identity for multiplication of whole numbers.

$1$ is the multiplicative identity of whole numbers

$\therefore$

$\textbf{Option B is not true}$ .

Simplify using distributive property:

$24\times 3 + 7\times 24$

0%
$240$
0%
$72$
0%
$24$
0%
$108$

Explanation

The Distributive Property is easy to remember if you recall that "multiplication distributes over addition".

Formally, they write this property as

$"a(b + c) = ab + ac".$

The word "associative" comes from "associate" or "group"; the Associative Property is the rule that refers to grouping.

For multiplication, the rule is

$"a(bc) = (ab)c"$

$24\times 3 + 7\times 24$

$= (24\times 3) + (24\times 7)$ (

$\because$ commutative property)

$= 24\times (3 + 7)$ (

$\because$ distributive property)

$= 24\times 10$

$= 240$ .

$a$ and

$b$ are two whole numbers, then commutative law is applicable to subtraction if and only if ________.

0%
$a = b$
0%
$a\neq b$
0%
$a > b$
0%
$a < b$

How many whole numbers are there between 25 and 82?

0%
56
0%
57
0%
59
0%
58

$8989900$ is the successor of

0%
$8989899$
0%
$8989901$
0%
$8989999$
0%
$none\ of\ these$

Explanation

$8989900 - 1 = 8989899$

The natural number 1 has no predecessor.

0%
True
0%
False

Explanation

$\textbf{Step 1: Take the predecessor of number 1 .}$

$\text{Predecessor of }$

$1= 1-1=0.$

$\Rightarrow \text{But zero is not a natural number.}$

$\Rightarrow \text{So, Natural number 1 has no predecessor.}$

$\textbf{Hence, the statement is true.}$

State whether the following statement is True or False.
The whole number

$0$ has no predecessor.

0%
True
0%
False

Explanation

True, predecessor of

$0$ is

$0-1=-1$ , which is not a whole number.

Hence whole number

$$0$$0 has no predecessor.

$(31 + 15) + x = 31 + (15 + 23)$ , then by using associativity of addition

$x=$

0%
$46$
0%
$38$
0%
$23$
0%
$69$

Explanation

Given,

$(31+15)+x=31+(15+23)$

or,

$31+(15+x)=31+(15+23)$ [ Using associativity of addition]

Now comparing both sides we get,

$15+x=15+23$

or,

$x=23$ .

$x + 12 = 12 + 7$ , then by commutatively of addition, we get

$x=?$

0%
12
0%
7
0%
19
0%
5

Explanation

Given,

$x + 12 = 12 + 7$

$a +b = b + a$ ....... commutative property of addition

So,

$x + 12 = 7 + 12$

On comparing

$x = 7$

Which one of the following is not a natural number?

0%
$1$
0%
$10$
0%
$0$
0%
$20$

Explanation

The natural numbers are all the integers which are greater than or equal to

$1$ .

Hence,

$0$ is not a natural number.

CBSE Questions for Class 6 Maths Whole Numbers Quiz 4 - MCQExams.com

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Practice Class 6 Maths Quiz Questions and Answers

CBSE Questions for Class 6 Maths Whole Numbers Quiz 4 - MCQExams.com

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Practice Class 6 Maths Quiz Questions and Answers

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