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CBSE Questions for Class 6 Maths Whole Numbers Quiz 1 - MCQExams.com
CBSE
Class 6 Maths
Whole Numbers
Quiz 1
The smallest natural number is
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$$0$$
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$$1$$
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$$2$$
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None of these
Explanation
We know that natural numbers start from $$1,\ 2,\ 3,\ ...$$
So, the smallest natural number $$=1$$
The smallest whole number is
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$$0$$
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$$1$$
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$$2$$
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None of these
Explanation
The Whole Numbers start from $$ 0 $$ and go on increasing.
So the Smallest Whole Number is $$0$$ .
The natural number which is a multiple of every number is ________.
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0
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1
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There is no such number
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None of these
Explanation
There is no such number which is a multiple of every number!
So option C is the correct option.
A whole number is added to $$25$$ and the same number is subtracted from $$25$$. The sum of the resulting numbers is
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$$0$$
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$$25$$
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$$50$$
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$$75$$
Explanation
Option C is right
Let,
The whole number $$=x$$
From the question,,
$$\therefore$$ Required sum $$=(25+x)+(25-x)=25+x+25-x=50$$
Fill in the blank:
The number ____ is marked with red colour on number line.
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$$1$$
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$$2$$
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$$3$$
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$$4$$
What is the value of $$9-4$$? Solve using number line.
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$$4$$
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$$5$$
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$$6$$
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$$7$$
$$80808080$$ comes just after
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$$80808099$$
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$$80808081$$
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$$80808079$$
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none
Explanation
$$80808080-1=80808079$$
38 + 83 = 83 + 38 is an example of:
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Commutative property
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Associative property
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Closure property
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Distributive property
Explanation
Commutative property of addition: Changing the order of addends does not change the sum. For example, $$a+b=b+a$$
So according to the above definition correct answer will be Option A
RHS part of the equation $$36(8+3) =$$ _______
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$$38+11$$
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$$(36 \times 8) \times (36 - 3)$$
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$$(36 \times 8) + (36 \times 3)$$
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$$(36 \times 8) + 3$$
Explanation
Using distributive formula ,
We can write, $$a(b+c)=a\times b+a\times c$$
So,
$$36(8+3)=(36 \times 8) + (36 \times 3)$$
Hence, $$Op-C$$ is correct.
Predecessor of natural number 1
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0
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2
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10
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Does not exist
Explanation
$$\textbf{Step -1: Use definition of natural numbers and find range of natural number.}$$
$$\text{The numbers usually used for counting are called natural numbers.}$$
$$\text{They range from 1 to infinity.}$$
$$\text{For example - 1, 2, 3, 4, 5, ...etc.}$$
$$\text{Hence, 1 being the lowest number in natural numbers, its predecessor does not exist.}$$
$$\text{Since to find any predecessor of natural number we subtract that number with 1.}$$
$$\text{here we have to find predecessor of 1 $\Rightarrow$ 1-1 = 0 which is not a natural number.}$$
$$\textbf{Hence, predecessor of natural number 1 does not exist. (Option D)}$$
The whole number which does not have a predecessor is
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$$100$$
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$$0$$
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$$1$$
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$$9$$
Explanation
$$\textbf{Step 1: Check which of these numbers has a predecessor.}$$
$$\text{Whole numbers are 0, 1, 2, 3... and so on.}$$
$$\text{Predecessor of a number is the number that comes before it.}$$
$$\text{But since there is no whole number before 0,}$$
$$\text{the whole number which does not have a predecessor is 0.} $$
$$\textbf{Hence, Option B is correct.}$$
Which of the following statement is true?
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Every whole number is a natural number
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Every natural number is a whole number
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'1' is the least whole number
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None of these
Explanation
Natural numbers set is $${1,2,3,......}$$
Whole numbers set is $${0,1,2,3,.....}$$
Clearly every natural number is a whole number.
Identify the number which when multiplied to the number $$82$$, gives the same number.
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$$82$$
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$$0$$
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$$\cfrac {1}{82}$$
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$$1$$
Explanation
'$$1$$' is the only number
which when multiplied to any number
82
, gives the same number.
So correct answer will be option D
The property satisfied by the division of whole numbers is
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Closure property
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Commutative property
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Associative property
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None of these
Explanation
Division of whole numbers does not satisfy any of the properties.
i) Let the divisor be $$ 0 $$.
$$\Rightarrow \dfrac{a}{0}$$ is not defined for any whole number $$a$$
$$\Rightarrow \dfrac{a}{0}$$ is not a whole number
Therefore, whole numbers are not closed under division.
ii) Consider any 2 whole numbers, say, $$6$$ and $$3$$,
$$\dfrac{6}{3} = 2$$ $$\neq$$ $$\dfrac{3}{6} = 0.5$$
Therefore, division of whole numbers is not commutative
iii)Consider any 3 whole numbers, say, $$2, 4, 8$$.
$$\Rightarrow \dfrac{\dfrac{2}{4}}{8} = \dfrac{1}{16}$$ and $$\dfrac{2}{\dfrac{4}{8}} = 4$$, i.e
$$\Rightarrow \dfrac{\dfrac{2}{4}}{8} \neq \dfrac{2}{\dfrac{4}{8}}$$
Therefore, division of whole numbers is not associative.
The property represented by $$a \times (b + c) = a \times b + a \times c$$ is
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Commutative property
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Associative property
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Distributive property
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None of these
Explanation
Distributive property say that multiplication an division can be distributed over parenthesis.
a x (b+c) = a x b + a x c
So correct answer will be option C
The value of $$555 \times 193 + 555 \times 93$$ is
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$$555,931$$
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$$1,210,321$$
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$$53,912$$
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$$158730$$
Explanation
Given that , we have to find the value of given expression
$$555 \times 193 + 555 \times 93$$
Taking $$555$$ common
$$ \Rightarrow 555 \times (193 + 93)$$
$$ \Rightarrow 555 \times (286) = 158730$$
So option $$D$$ is correct
The property represented by $$a + b = b + a$$ is
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Associative property
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Commutative property
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Closure property
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Additive identity
Explanation
Commutative property of addition: Changing the order of addends does not change the sum. For example, $$a+b=b+a$$
So correct answer will be option B
Additive identity element of 24 is
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-24
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1
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0
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None
Explanation
The "Additive Identity" is
0
, because adding 0 to a number leaves it unchanged
So correct answer will be option C
The value of $$498 \times 73 + 498 \times 27$$ is
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$$4980$$
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$$49,800$$
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$$498,000$$
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None
Explanation
$$498 \times 73 + 498 \times 27$$
$$= 498 \times (73 + 27)$$
$$= 498 \times 100 = 49800$$
Multiplicative identity of whole number is given by
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$$1$$
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$$0$$
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Both $$0$$ and $$1$$
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None
Explanation
The
multiplicative identity
property states that any time you multiply a number by 1, the result, or product, is that original number.
So it is clear that multiplicative property is given by
So correct answer will be option A
Predecessor of $$100,000,000$$ is ___________.
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$$99999999$$
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$$9999999$$
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$$999999$$
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$$999999999$$
Explanation
predecessor is number which occurs before the given number
1000000000-1=99999999
Smallest whole and natural number are respectively ________.
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$$1, 2$$
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$$0, 1$$
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$$2, 1$$
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$$10, 9$$
Explanation
smallest whole number is 0 and natural number is 1
The counting numbers $$1,2,3,4,....$$ are called
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whole number
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natural numbers
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integers
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None of these
Explanation
Natural numbers are the set of whole numbers $$($$ except $$0).$$
The numbers $$1,2,3,4,5.......$$ are called natural numbers.
Which of the following options defines associative property for whole numbers?
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$$0+(8+5) = (0+8)+5$$
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$$0 \times (8+5) = (0+8) \times 5$$
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$$0-(8 \div 5) = (0-8) \div 5$$
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$$0 \div (8 \div 5) = (0 \div 8) \div 5$$
Explanation
LHS $$=0+(8+5)$$ = $$0+13 = 13$$
RHS $$= (0+8)+5$$ = $$8+5 = 13$$
LHS $$=$$ RHS
Therefore, option A is correct.
Which of the following operations are not associative with respect to whole numbers?
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addition and subtraction
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subtraction and division
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addition and multiplication
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multiplication and division
Explanation
Associative property does not hold good w.r.t. subtraction:
$$A-(B-C) \neq (A-B)-C$$
Associative property does not hold good w.r.t. division as well:
$$A \div (B \div C) \neq (A \div B) \div {C}$$
So, option $$B$$ is correct.
The property represented by a $$\displaystyle \times$$ (b + c) = a $$\displaystyle \times$$ b + a $$\displaystyle \times$$ c is
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commutative property
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associative property
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distributive property
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none of these
Explanation
Distributive property can bre written as
a x (b+c) = a x b + a x c
Multiplicative identity of whole numbers is ..........
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1
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0
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2
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Both A and B
Explanation
Multiplicative identity is a number with which when multiplied should give the result as the same number.
Successor of $$301,999$$ is _____
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$$300,200$$
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$$302,000$$
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$$302,010$$
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$$301,100$$
Explanation
The given number is $$301,999$$
Successor of $$301,999$$
$$=301,999 + 1 = 302,000$$
Successor of $$100000000$$ is ___________.
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$$99999999$$
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$$100000001$$
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$$10000002$$
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None of these
Explanation
Successor is the number which occurs just after the given number
$$100000000 + 1 = 100000001$$
Which of the following expressions is equal to 83 $$\times$$ 5 ?
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8 $$\times$$ (3 + 5)
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5 $$\times$$ (8 + 3)
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5 $$\times$$ (80 + 3)
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80 $$\times$$ (3 + 5)
Explanation
83×5=(80+3)×5
So option C is the correct answer.
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