Whole Numbers Test

Result

Whole Numbers Test - 20

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Weekly Quiz Competition

Question 1
1 / -0

Mark the correct alternative of the following.
The successor of 1 million is?

A
$$10001$$

B
$$100001$$

C
$$1000001$$

D
$$10000001$$

Solution

We know that, a successor is a number that appears immediately after a given number.
We obtain the successor of a number by adding $$1$$ to that number.
The given number is $$1\ million$$
$$\Rightarrow 1000000$$
$$\therefore \ $$ The its successor $$=1000000+1=1000001$$.

Hence, the successor of $$1\ million$$ is $$1000001$$.
Question 2
1 / -0

Number of whole numbers lying between $$-5$$ and $$5$$ is

A
$$10$$

B
$$3$$

C
$$4$$

D
$$5$$

Solution

Option D is right.
Number of whole numbers lying between $$-5$$ and $$5$$ are $$0, 1, 2, 3$$ and $$4$$.
Question 3
1 / -0

Number of whole numbers between $$38$$ and $$68$$ is

A
$$31$$

B
$$30$$

C
$$29$$

D
$$28$$

Solution

Option C is right
Whole number starts from $$0$$ and increase by $$1$$ each
They are $$0, 1, 2, 3....$$
Whole numbers between $$39$$ and $$68$$ are
$$39, 40, 41... 66, 67$$
Hence $$29$$ whole numbers between $$38$$ and $$68$$
Question 4
1 / -0

Find value of K
$$19 \times 12+19= 19\times (12+K)$$

A
$$1$$

B
$$2$$

C
$$3$$

D
$$-1$$

Solution

Let, the member is $$K$$
$$19 \times 12+19= 19\times (12+K)$$
$$228+19=19 \times 12+19 \times K$$
$$228+19=228 +19 \times K$$
$$19 \times K=228+19-228$$
$$19 \times K=19$$
$$K=\dfrac{\not{19}}{ \not{19}}=1$$
Question 5
1 / -0

Which of the following statements is not true?

A
Both addition and multiplication are associative for whole numbers.

B
Zero is the identity for multiplication of whole numbers.

C
Addition and multiplication both are commutative for whole numbers.

D
Multiplication is distributive over addition for whole numbers.

Solution

Option B is right
Identity of addition of whole number is zero.
Identity of multiplication of whole number is one.
Question 6
1 / -0

A whole number is added to $$25$$ and the same number is subtracted from $$25$$. The sum of the resulting numbers is

A
$$0$$

B
$$25$$

C
$$50$$

D
$$75$$

Solution

Option C is right
Let,
The whole number $$=x$$
From the question,,
$$\therefore$$ Required sum $$=(25+x)+(25-x)=25+x+25-x=50$$
Question 7
1 / -0

Which of the following is not true?

A
$$(7+8)+9=7+(8+9)$$

B
$$(7\times 8)\times 9=7\times (8\times 9)$$

C
$$7+8\times 9=(7+8)\times (7+9)$$

D
$$7\times (8+9)=(7\times 8)+(7\times 9)$$

Solution

Option C is right
L.H.S. $$=7+8\times 9=7+72=79$$
R.H.S $$=(7+8)\times (7+9)=15\times 16=240$$
$$L.H.S. \neq R.H.S$$
Question 8
1 / -0

Which letter represents $$5$$ on the given number line?

A
$$A$$

B
$$B$$

C
$$C$$

D
$$D$$

Solution

On the given number line,

Letter $$A$$ represents $$0$$.
Letter $$B$$ represents $$2$$.
Letter $$C$$ represents $$5$$.
Letter $$D$$ represents $$7$$.

So, letter $$C$$ represents $$5$$.

Hence, $$Op-C$$ is correct.
Question 9
1 / -0

Write the correct answer from the given four options.
How many natural numbers lie between $$5^2$$ and $$6^2$$?

A
9

B
10

C
11

D
12

Solution

Square of 5 = 25 and
Square of 6 = 36
Natural numbers lie between 25 and 36 = 26, 27, 28, 29, 30, 31, 32, 33, 34, 35.
Question 10
1 / -0

Choose the correct answer in place of question mark$$(?)$$ in the following:
$$7 \times ? = 1$$

A
$$\dfrac{1}{4}$$

B
$$\dfrac{1}{5}$$

C
$$\dfrac{1}{6}$$

D
$$\dfrac{1}{7}$$

Solution

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Whole Numbers Test - 20

Result

Whole Numbers Test - 20

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SHARING IS CARING

Question 1

$$10001$$

$$100001$$

$$1000001$$

$$10000001$$

Solution

Question 2

$$10$$

$$3$$

$$4$$

$$5$$

Solution

Question 3

$$31$$

$$30$$

$$29$$

$$28$$

Solution

Question 4

$$1$$

$$2$$

$$3$$

$$-1$$

Solution

Question 5

Both addition and multiplication are associative for whole numbers.

Zero is the identity for multiplication of whole numbers.

Addition and multiplication both are commutative for whole numbers.

Multiplication is distributive over addition for whole numbers.

Solution

Question 6

$$0$$

$$25$$

$$50$$

$$75$$

Solution

Question 7

$$(7+8)+9=7+(8+9)$$

$$(7\times 8)\times 9=7\times (8\times 9)$$

$$7+8\times 9=(7+8)\times (7+9)$$

$$7\times (8+9)=(7\times 8)+(7\times 9)$$

Solution

Question 8

$$A$$

$$B$$

$$C$$

$$D$$

Solution

Question 9

9

10

11

12

Solution

Question 10

$$\dfrac{1}{4}$$

$$\dfrac{1}{5}$$

$$\dfrac{1}{6}$$

$$\dfrac{1}{7}$$

Solution

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