Knowing our Numbers Test

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Knowing our Numbers Test - 22

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Weekly Quiz Competition

Question 1
1 / -0

Round off $$690$$ to nearest $$100$$.

A
$$780$$

B
$$690$$

C
$$700$$

D
$$800$$

Solution

The given number is $$690.$$ Its tens digit are $$9$$, which is greater than $$5$$.

So, we increase the digits at hundreds place by $$1$$ and replace each one of the digits at tens and one's place by $$0$$ to round off the given number to nearest $$100$$.
$$\therefore$$ Round off $$690$$ to nearest $$100$$ is $$700.$$
Question 2
1 / -0

The smallest three-digit number using the digits $$3, 7, 8, 6$$ (repetition not allowed) is

A
$$387$$

B
$$367$$

C
$$386$$

D
$$386$$

Solution

$$3,9,7,8,6$$
Smallest three digit number will be formed my smallest of the three digits from the given ones, i.e. $$3,6,7$$

Smallest three digits number possible $$= 367$$
Question 3
1 / -0

Express in Indian system of numeration.
Three million four hundred thirty five thousand two hundred twenty five.

A
$$345,225$$

B
$$34,352,25$$

C
$$3,43,52,25$$

D
$$34,35,225$$

Solution

Let us convert the given number in words into numerals as follows:

Three million$$=30,00,000$$
Four hundred thirty five thousand$$=435,000$$
Two hunderd$$=200$$
Twenty$$=20$$
Five$$=5$$

Now, add the numerals as shown below:

$$3000000+435000+200+20+5=34,35,225$$

Therefore, the required number is $$34,35,225$$.

Hence, the Indian system of numeration is $$34,35,225$$.
Question 4
1 / -0

Express "XLIX" in English numeral.

A
$$69$$

B
$$49$$

C
$$89$$

D
$$59$$

Solution

In Roman numeral form,
$$50 = L$$
$$\Rightarrow 40 = XL$$

Also, $$9 = IX$$

$$\Rightarrow XLIX = 49$$
Question 5
1 / -0

A person bought $$32$$L of water for the football game and he divided the water equally into $$8$$ cooler. Find the quantity of water in each of the coolers by converting it into millilitres.

A
$$40$$ ml

B
$$400$$ ml

C
$$4000$$ ml

D
$$40000$$ ml

Solution

Quantity of water$$=32ℓ=32000㎖$$
Number of cooler$$=8$$
$$\therefore $$Quantity of water in each cooler$$=\cfrac { 32000 }{ 8 } =4000㎖$$
Question 6
1 / -0

Express in Indian number system:
$$35,987,123$$

A
$$35,987,123$$

B
$$3,59,87,123$$

C
$$3,987,123$$

D
$$3,59,8,71,23$$

Solution

According to Indian system of numeration given number can be written as $$3,59,87,123.$$
Question 7
1 / -0

Write the smallest $$4$$ digit number formed using the digits $$8,3,0,1$$.

A
$$1038$$

B
$$1308$$

C
$$1083$$

D
$$0138$$

Solution

The ascending order of the given numbers $$8,3,0,1$$ is:

$$0 < 1 < 3 < 8$$

A number cannot begin with $$0$$, so we will put it in the second place.

The smallest digit (other than $$0$$) is $$1$$.

Therefore, the number will begin with $$1$$.

Thus, the smallest number formed is $$1038$$.

Hence, the smallest $$4$$ digit number formed is $$1038$$.
Question 8
1 / -0

The number reads "Forty five lakh sixty one thousand two hundred thirty four"

A
$$55,61,234$$.

B
$$45,61,234$$.

C
$$45,61,264$$.

D
$$45,61,230$$.

Solution

Let us convert the given number in words into numerals as follows:

Forty five lakh$$=45,00,000$$
Sixty one thousand$$=61,000$$
Two hunderd$$=200$$
Thirty$$=30$$
Four$$=4$$

Now, add the numerals as shown below:

$$4500000+61000+200+30+4=4561234$$

Therefore, the required number is $$45,61,234$$.
Question 9
1 / -0

Find a smallest four digit number using the digits $$7,8,9,5$$ such that the number thus formed has $$9$$ at its hundreds place and $$8$$ at its one's place.

A
$$5978$$

B
$$7598$$

C
$$7958$$

D
$$7985$$

Solution

The ascending order of the given numbers $$7,8,9,5$$ is:

$$5 < 7 < 8 < 9$$

We observe that the smallest digit is $$5$$ and the largest digit is $$9$$.

Therefore, the smallest number formed is $$5789$$.

But it is given that the number formed should have $$9$$ at its hundredth place and $$8$$ at its one's place, therfore, the required number is:

$$5978$$ where $$8$$ is at one's place, $$7$$ is at tens place, $$9$$ is at hundredth place and $$5$$ is at thousandth place.

Hence, the smallest $$4$$ digit number formed is $$5978$$.
Question 10
1 / -0

Express in Indian number system.
$$4,456,765$$

A
Four crore forty five lakh seven hundred sixty five,

B
Forty four lakh fifty six thousand seven hundred sixty five,

C
Forty four crore forty five lakh seven hundred sixty five,

D
Forty five lakh seven hundred sixty five,

Solution

Let us convert the given numerals into words as follows:

$$44,00,000=$$Forty four lakh
$$56,000=$$Fifty six thousand
$$700=$$Seven hundred
$$60=$$Sixty
$$5=$$Five

Now, combine the numbers in words as shown below:

Fourty four lakh fifty six thousand seven hundred sixty five.

Hence, the Indian number system is fourty four lakh fifty six thousand seven hundred sixty five.

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Re-Attempt Weekly Quiz Competition

Knowing our Numbers Test - 22

Result

Knowing our Numbers Test - 22

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SHARING IS CARING

Question 1

$$780$$

$$690$$

$$700$$

$$800$$

Solution

Question 2

$$387$$

$$367$$

$$386$$

$$386$$

Solution

Question 3

$$345,225$$

$$34,352,25$$

$$3,43,52,25$$

$$34,35,225$$

Solution

Question 4

$$69$$

$$49$$

$$89$$

$$59$$

Solution

Question 5

$$40$$ ml

$$400$$ ml

$$4000$$ ml

$$40000$$ ml

Solution

Question 6

$$35,987,123$$

$$3,59,87,123$$

$$3,987,123$$

$$3,59,8,71,23$$

Solution

Question 7

$$1038$$

$$1308$$

$$1083$$

$$0138$$

Solution

Question 8

$$55,61,234$$.

$$45,61,234$$.

$$45,61,264$$.

$$45,61,230$$.

Solution

Question 9

$$5978$$

$$7598$$

$$7958$$

$$7985$$

Solution

Question 10

Four crore forty five lakh seven hundred sixty five,

Forty four lakh fifty six thousand seven hundred sixty five,

Forty four crore forty five lakh seven hundred sixty five,

Forty five lakh seven hundred sixty five,

Solution

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