Knowing our Numbers Test

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Knowing our Numbers Test - 24

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Weekly Quiz Competition

Question 1
1 / -0

Hindu-Arabic numeral for $$CCXLVII$$, is ________.

A
$$347$$

B
$$247$$

C
$$267$$

D
$$367$$

Solution

We are given $$CCXLVII$$

We know,

$$C$$ stands for $$100$$
$$L$$ stands for $$50$$ $$\Longrightarrow$$ $$XL$$ stands for $$40$$
$$VII$$ stands for $$7$$

Thus we have,
$$100 + 100 + 40 + 7 = 247$$
Question 2
1 / -0

Using all the given digits, form the greatest possible $$7-digit$$ even number, if repetition of digits is allowed.
$$9\ 3\ 0\ 8$$

A
$$9830000$$

B
$$9998830$$

C
$$9988330$$

D
$$9999830$$
Question 3
1 / -0

How many meters are there in $$1.25$$ kilometers?

A
$$10.25$$ m

B
$$125$$ m

C
$$1250$$ m

D
$$12500$$ m

Solution

We know that $$1km=1000m$$
Suppose $$1.25km = x$$
$$\Rightarrow x={1.25}\times 1000$$
$$\Rightarrow x=1250$$ m
Hence, the answer is $$1250$$ m.
Question 4
1 / -0

Ms. Ben wrote four numbers on the board and asked the student to relate them according to the last lesson taught on number system. Which of the following number she wrote is different from others?

A
10 hundred

B
100 hundred

C
1000 hundred

D
100000 lakh

Solution
Question 5
1 / -0

Rewrite each of the following numerals using periods and places in the international place value chart.
$$183497026$$, $$700083460$$, $$810000008$$

A
$$(18,34,97,026)$$, $$(70,00,83,460)$$, $$(81,00,00,008)$$

B
$$(183,497,026)$$, $$(700,083,460)$$, $$(810,000,008)$$

C
$$(1834,970,26)$$, $$(7000,834,60)$$, $$(8100,000,08)$$

D
None of these
Question 6
1 / -0

Mark the correct alternative of the following.
The difference between the greatest and the smallest numbers which when rounded off to the nearest thousand as $$9000$$ is?

A
$$1000$$

B
$$990$$

C
$$999$$

D
$$900$$

Solution

We know that the greatest number that when rounded off to the nearest thousand becomes $$9,000 = 9499$$

Smallest number that when rounded off to the nearest thousand becomes $$9,000 = 8500$$

So, the difference between them $$= 9,499 − 8,500 = 999$$

Hence, the difference between the greatest and the smallest numbers which when rounded off to the nearest thousand as $$9000$$ is $$999$$.
Question 7
1 / -0

Mark the correct alternative of the following.
$$1827$$ when rounded off to be nearest hundred is?

A
$$1900$$

B
$$1820$$

C
$$1850$$

D
$$1800$$

Solution

Rounding a number to the nearest hundred, we use the following rules:

A) We round the number up to the nearest hundred if the last two digits in the number are $$50$$ or above.

B) We round the number down to the nearest hundred if the last two digits in the number are $$49$$ or below.

C) If the last two digits are $$00$$, then we do not have to do any rounding, because it is already to the hundred.

Now, we are given a number $$1827$$ whose hundred place is $$27$$ which is below $$50$$, therefore, the nearest hundred to $$1827$$ is $$1800$$.

Hence, the nearest hundred of $$1827$$ when rounded off is $$1800$$.
Question 8
1 / -0

Mark the correct alternative of the following.
The greatest number which when rounded off to the nearest thousand as $$7000$$, is?

A
$$6500$$

B
$$6549$$

C
$$7499$$

D
$$6499$$

Solution

Numbers from $$6500$$ to $$7499$$ are rounded off to nearest thousand as $$7000$$. Therefore, the greatest number is $$7499$$.

Hence, the greatest number which when rounded off to the nearest thousand as $$7000$$ is $$7499$$.
Question 9
1 / -0

By converting the $$5.6\ m^2$$ into the $$cm^2$$, the answer will be

A
$$0.0056\ cm^2$$

B
$$5600\ cm^2$$

C
$$56000\ cm^2$$

D
$$560\ cm^2$$

Solution

As we know that,
$$1\ m = 100\ cm$$
So,
$$1\ m\times 1\ m=100\ cm\times 100\ cm$$
$$\Rightarrow 1\ m^2 = 10000\ cm^2$$

By using the above conversion,
$$5.6\ m^2 = 5.6\times 10000\ cm^2$$
$$=56000\ cm^2$$

Hence, option $$C$$ is correct.
Question 10
1 / -0

How many thousands make a lakh?

A
10

B
100

C
1000

D
10000

Solution

$$1$$ lakh means $$1,00,000$$ which is equal to one hundred thousand
Therefore $$1,00,000 = (100 \times 1000)$$
Hence one hundred thousands make a lakh.

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Re-Attempt Weekly Quiz Competition

Knowing our Numbers Test - 24

Result

Knowing our Numbers Test - 24

Score

-

Rank

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SHARING IS CARING

Question 1

$$347$$

$$247$$

$$267$$

$$367$$

Solution

Question 2

$$9830000$$

$$9998830$$

$$9988330$$

$$9999830$$

Question 3

$$10.25$$ m

$$125$$ m

$$1250$$ m

$$12500$$ m

Solution

Question 4

10 hundred

100 hundred

1000 hundred

100000 lakh

Solution

Question 5

$$(18,34,97,026)$$, $$(70,00,83,460)$$, $$(81,00,00,008)$$

$$(183,497,026)$$, $$(700,083,460)$$, $$(810,000,008)$$

$$(1834,970,26)$$, $$(7000,834,60)$$, $$(8100,000,08)$$

None of these

Question 6

$$1000$$

$$990$$

$$999$$

$$900$$

Solution

Question 7

$$1900$$

$$1820$$

$$1850$$

$$1800$$

Solution

Question 8

$$6500$$

$$6549$$

$$7499$$

$$6499$$

Solution

Question 9

$$0.0056\ cm^2$$

$$5600\ cm^2$$

$$56000\ cm^2$$

$$560\ cm^2$$

Solution

Question 10

10

100

1000

10000

Solution

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