MCQ Questions for Class 6 Maths Knowing Our Numbers Quiz 8

Which of the following numbers in Roman numerals is incorrect?

0%
$LXXX$
0%
$LXX$
0%
$LX$
0%
$LLX$

Explanation

According to the rules of writing Roman numerals, L can be used only once.
So LLX is not a correct representation of roman numeral

$\therefore\ \textbf{Option D is correct}$

When rounded off to nearest thousands, the number

$85642$ is

0%
$85600$
0%
$85700$
0%
$85000$
0%
$86000$

Explanation

$\textbf{Check the digit in the hundreds place:}$

As we are rounding off the number to the nearest thousands we need to check the digit in the next smaller place value which is hundreds place.

Given number

$= 85642$

At hundreds places we have

$6$ which is greater than

$5$ , so we add

$1$ to the thousand’s place.

Therefore new thousands place will be

$5 + 1 = 6$

Other digits on the right of the thousand's place will be zeros.

$\therefore\ 85642$ rounded off to nearest thousand’s place

$= 86,000$

$\therefore$

$\textbf{Correct Option is D}$

The greatest number which on rounding off to nearest thousands gives

$5000$ , is

0%
$5001$
0%
$5559$
0%
$5999$
0%
$5499$

Explanation

$\textbf{Identifying the digit in the hundreds place:}$
As we are rounding off the number to the nearest thousands we need to check the digit in the next smaller place value which is hundreds place.
Given that a number is rounded off to get

$5000$ .

All the numbers given in the options have

$5$ in the thousands place.
So the digit in the hundreds place should be less than

$5$ .

Also we need the greatest possible number so we should take the biggest digit that is less than

$5$ which is

$4$ .
So the hundreds place should have

$4$ ,

The remaining places should have the highest digit which is

$9$ .
So,

$5499$ is the required number.

$\therefore$

$\textbf{Option D is correct}$ .

One million is equal to

0%
$1$ lakh
0%
$10$ lakh
0%
$1$ crore
0%
$10$ crore

Explanation

We know that

$1$ million

$= 1,000,000$

$= 10,00,000$ in Indian system

And

$1$ lakh

$= 1,00,000$

Now

$1$ million

$= 1,000,000$

$=10, 00,000$

$= 10 \times 1,00,000$

$= 10$ lakhs

Therefore,

$1$ million

$= \underline{10}$ lakhs

$\therefore$

$\textbf{Option B is correct}$ .

Keeping the place of

$6$ in the number

$6350947$ same, the smallest number obtained by rearranging other digits is

0%
$6975430$
0%
$6043579$
0%
$6034579$
0%
$6034759$

Explanation

$\textbf{Step 1: Arrange the digits other than $$6$$ in ascending order to get the smallest possible number}$
Given, number

$6350947$ has

$7$ digits and

$6$ needs to be in its original place.

Remaining digits

$3, 5, 0, 9, 4, 7$ are to be rearranged to get a smallest number.
So the number starts with

$6$ and and the remaining digits should follow in ascending order.

Ascending order of digits

$3, 5, 0, 9, 4, 7$ is

$0 < 3 < 4 < 5 < 7 < 9$
So, the smallest number that can be formed

$\underline{6034579}$

$\therefore$

$\textbf{Option C is correct}$ .

The largest

$5$ - digit number having three different digits is

0%
$98978$
0%
$99897$
0%
$99987$
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$98799$

Explanation

$\textbf{Step1: Identify the digits}$

We have to form largest

$5$ -digit number using three different digits

So we will use largest numbers

$9, 8,$ and

$7$

To form a

$5$ -digit number, we have to use one or two digits more than once.

$\textbf{Step2: Arrange the digits in descending order}$

We will use digit

$9$ three times, as it is the largest of the digits.

We will write the remaining two digits in descending order to form the largest number.

So, largest

$5$ -digit number formed with three different digits

$9, 8, 7$ is

$99987$

$\therefore$

$\textbf{Option C is correct}$ .

The sum of two whole numbers is always less than their product.

0%
True
0%
False

Explanation

Let us assume two whole numbers

$0$ and

$1$ then:

Their sum is

$0 + 1 = 1$

And their product is

$0 \times 1 = 0$

Clearly, their sum is greater than the product.

$\textbf{Therefore the given statement is False}.$

The smallest

$4-$ digit number having three different digits is

0%
$1102$
0%
$1012$
0%
$1020$
0%
$1002$

Explanation

$\textbf{Step 1: Identify the digits}$
We have to find the smallest

$4$ -digit number having three different digits.
So, we will use the smallest digits

$0, 1, 2$

Any of the digits

$0, 1, 2$ is to be repeated two times to form a

$4$ -digit number.

$0$ is the smallest number among

$0, 1, 2$ and can be used twice.

$\textbf{Step 2: Arrange the digits in ascending order}$

$0$ cannot be placed in the thousand's place as a number cannot start with

$0$ .
So, place the next smallest number

$1$ in the thousands place.

Therefore Smallest

$4$ -digit number formed with three different digits

$0, 1, 2$ is

$1002$

$\therefore$

$\textbf{Option D is correct}$ .

If a grown up elephant eats 136 kg in a day, then how much will elephant eat in a year? (No Leap year)

0%
49542
0%
49640
0%
48795
0%
49998

Which of the following is the correct representation for the following statement?
"4 is subtracted from 13 and resulting answer multiplied by the sum of 8 and 15".

0%
$13 - 4 + 8 + 15$
0%
$(13 - 4) 8 + 15$
0%
$(13 - 4) + (8 + 15)$
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$(13 - 4) (8 + 15)$

Which of the following expression represents the sum of five and nine is multiplied by three?

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$5 + 9 3$
0%
$5 + (9 3)$
0%
$(5 + 9) 3$
0%
None of these

Explanation

Sum of five and nine is represented as

$5+9$

Three multiplied by the sum of five and nine is represented as

$3 \times (5+9)$ or

$3(5+9)$

The traffic lights at three different road

crossings change after every 48 sec, 72 sec and 108 sec, respectively. If they

all change simultaneously at 8:20:00 hrs., then at what time will they again

change simultaneously?

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8:26:12 hrs.
0%
8:26:00 hrs.
0%
8:27:00 hrs.
0%
8:27:12 hrs.

Write the greatest

$4-digit$ number using different digits with

$6$ in the ten's place?

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$9865$
0%
$9867$
0%
$9687$
0%
$6987$

Expanded form of

$37034$ is __________.

0%
$3000 + 700 + 0 + 30 + 4$
0%
$30000 + 700 + 0 + 10 + 4$
0%
$30000 + 1000 + 0 + 70 + 4$
0%
$30000 + 7000 + 0 + 30 + 4$

Find the greatest number which will divide the greatest

$4-digit$ number and the greatest

$5-digit$ number exactly.

0%
$9$
0%
$8$
0%
$7$
0%
$3$

One trillion is 1 followed by 12 zeros. What is 1 followed by 18 zeros?

0%
1 quadrillion
0%
1 quintillion
0%
1 septillion
0%
1 octillion

CBSE Questions for Class 6 Maths Knowing Our Numbers Quiz 8 - MCQExams.com

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Practice Class 6 Maths Quiz Questions and Answers

CBSE Questions for Class 6 Maths Knowing Our Numbers Quiz 8 - MCQExams.com

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Practice Class 6 Maths Quiz Questions and Answers

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