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Published on: 23/08/2019
Whole Numbers
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Questions + Answers key
Take MCQ Mathematics Test
1.
The predecessor of a two-digit number is never a single digit number.
2.
All whole numbers are natural numbers.
3.
All natural numbers are whole numbers.
4.
600 is the successor of 599.
5.
Zero is the smallest whole number.
6.
400 is the predecessor of 399.
7.
Zero is the smallest natural number.
8.
(15 x 10) is a whole number
9.
127 + 73 = 73 + 127
10.
80 + 2005 + 20 = 80 + 20 + 2005
11.
2 x 49 x 50 = 2 x 50 x 49
12.
425 x 136 = 425 x (6 + 30 + 100)
13.
To find the successor of a number, we have to add
4
3
2
1
14.
To find the predecessor of a number, we have to subtract
1
2
3
4
15.
The difference between the successor and the predecessor of a number is
1
2
-1
-2
16.
The difference between the predecessor of a number and the number itself is
1
-1
2
-2
17.
The difference between the successor of a number and the number itself is
0
-1
1
None of these
18.
Which of the following is not zero?
0 x 0
\(\frac{0}{2}\)
\(\frac{(8-8)}{2}\)
2 + 0
19.
The successor of 1 million is
2 million
1000001
100001
10001
20.
The whole number which has no predecessor is
1
0
2
3
21.
A whole number is added to 25 and the same number is subtracted from 25. The sum of the resulting numbers is
0
25
50
75
22.
The product of non-zero whole number and its successor is always
an even number
an odd number
a prime number
divisible by 3
23.
125 + (68 + 32) = (125 + ______ ) + 32.
24.
10005 x 0 = ___________.
25.
Multiplication is distributive over ___________ for whole numbers.
26.
Division of whole number by __________ is not defined.
27.
Whole numbers are closed under __________ and under __________.
28.
____________ is the successor of the largest 3-digit number.
29.
450 is the successor of __________.
30.
300 is the predecessor of ____________.
1.
(b)
2.
(b)
3.
(a)
4.
(a)
5.
(a)
6.
(b)
7.
(b)
8.
( )
Closure property of multiplication
9.
( )
Commutative property of addition.
10.
( )
Commutativity under addition
11.
( )
Commutativity under multiplication.
12.
( )
Distributivity of multiplication over addition.
13.
(d)
1
14.
(a)
1
15.
(b)
2
16.
(a)
1
17.
(c)
1
18.
Here, we have
(a) 0 x 0 = 0
(b) \(\frac{0}{2}=0\)
(c) \(\frac{8-8}{2}=\frac{0}{2}=0\)
(d) 2 + 0 = 2
Hence, 2 + 0 = 2 is not zero.
19.
1 million = 1000000
So, successor of 1000000 = 1000000 + 1
= 1000001.
20.
Zero (0) has no predecessor.
21.
Let the whole number be x.
Now, according to the question,
x + 25 + 25 - x = 50.
22.
The product of non-zero whole number and its successor is always an even number.
23.
According to the associative law under addition,
125 + (68 + 32) = (125 + 68) + 32.
24.
( )
0
25.
We know that, multiplication is distributive over addition for whole numbers.
e.g. 2, 3, 5 are whole numbers, then 2 x (3 + 5) = 2 x 3 + 2 x 5.
26.
( )
0
27.
We know that, whole numbers are closed under addition and multiplication.
i.e. 2 + 3 = 5, which is a whole number
and 2 x 3 = 6, which is a whole number.
28.
that, the largest 3-digit is 999.
\(\therefore\) Successor of 999 = 999 + 1 = 1000
So, 1000 is the successor of largest 3-digit number.
29.
Here, we will find predecessor of 450 = 450 - 1 = 449
So, 450 is the successor of 449.
30.
Here, we will find successor of 300, 300 + 1 = 301
So, 300 is the predecessor of 301.
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