Whole Numbers - Free MCQ Practice Test with solutions, Class 6 1000+ Questions

Natural numbers include all positive numbers starting from 1. Whole numbers include all natural numbers along with 0.

The result is that natural numbers are a subset or a part of whole numbers.

A whole number is any non‑negative integer: 0, 1, 2, 3, ….

The predecessor of a number is the number obtained by subtracting 1 from it.

The predecessor of 0 is 0 − 1 = −1, which is not a whole number.

Therefore, 0 does not have a predecessor among whole numbers. Correct option: B.

The number that, when multiplied by 82, equals 82, is 1.

The solution can be summarised as follows:

• The number 1 is known as the multiplicative identity.
• This means that any number multiplied by 1 remains the same.
• Therefore, 82 x 1 = 82.

Other options do not satisfy this condition:

• Multiplying 82 by 0 results in 0.
• Multiplying 82 by 82 results in 6724.
• Multiplying 82 by 1/82 results in 1.

To form the greatest number (without repetition of digits) from the given digits, write them in descending order and place commas after periods.

To form the smallest number (without repetition of digits) from the given digits, write them in ascending order and place commas after periods. Remember that a number cannot start with 0 in the leftmost place.

105689 is the smallest 6 - digit number of the given digit is 9 , 6 , 0 , 5 , 8 , 1 .

238 divided by 238 equals 1 because:

• Any non-zero number divided by itself results in 1.

Therefore, the correct answer is option D.

The correct option is C 0.
We are asked to find the additive identity of 24. For that, first, we should calculate the additive inverse of 24. We know that the additive inverse of a number is its negative. So, the additive inverse of 24 is equal to -24.
Now, we know that the additive identity for a number x, is a number which is obtained when x is added to its additive inverse. So, to find the additive identity of 24, we will add it to its additive inverse, i.e. -24.
So, we get: Additive identity = 24 + (-24)
= 24 – 24
= 0

The successor of 301,999 is calculated by:

• Adding 1 to 301,999
• This results in 302,000

Therefore, the correct answer is option B.

The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product.

So, 6x(7×3)=(6×7)×3 is an example of Associative property of multiplication. 

So option A is the correct option. 

The two consecutive numbers after 5009 are :

5010, 5011

So option C is the correct answer. 

Addition and multiplication of whole numbers satisfy closure property.
as 2+3 = 5 and 3+2 = 5
and 2x3 = 6  and 3x2 = 6

When any number a is divided by 1, the result is always a. Therefore:

• 64 ÷ 1 = 64

Any number multiplied by zero equals zero. Therefore:

• (98 + 14) × 0 = 0

• The predecessor of a number is the number that comes just before it.
• The set of natural numbers starts from 1, 2, 3, … and does not include 0 or negative numbers.
• 1 is the first natural number and has no predecessor in the set of natural numbers.
• Other numbers (2, 10) have predecessors:
• Predecessor of 2 is 1
• Predecessor of 10 is 9
• 0 is not a natural number, so it is not considered.

Thus, the correct answer is (b) 1. 

Natural numbers set is {1,2,3,.......}. Whole numbers set is {0,1,2,3,,.....}. Clearly, every natural number is a whole number.

Just use the associative property
ax(b-c) =a x b - a x c
36 × (8-3) = (36 × 8) - (36 × 3)

The correct option is C Closure property
The closure property of addition states: If a and b are whole numbers, then the answer of a + b will also be a whole number.

a=23

b=23

So 23-23=0

Therefore,commutative law is only and only applicable to subtraction if and only if a=b

 555 × 193 - 555 × 93 = 55500
or take 555 common
555 ( 193 - 93 ) = 555 x 100 = 55500