Knowing our Numbers Test

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Knowing our Numbers Test - 19

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Weekly Quiz Competition

Question 1
1 / -0

What is the product of largest four digit number and smallest two digit number?

A
$$9990$$

B
$$99990$$

C
$$999990$$

D
None of these
Question 2
1 / -0

Obtain the value of $$204 \times 117 + 12$$

A
$$2380$$

B
$$21880$$

C
$$22880$$

D
$$23880$$
Question 3
1 / -0

Where we can put brackets (parentheses) in $$ 5 \times 3 - 2 + 1$$ to make it equivalent to $$14$$?

A
$$ 5 \times 3 - (2 + 1) $$

B
$$(5 \times 3) - (2 + 1) $$

C
$$(5 \times 3) - 2 + 1$$

D
None of these

Solution

Following the rules of BODMAS
$$(5 \times 3)-2+1=15-2+1=16-2=14$$
Question 4
1 / -0

Obtain the value of $$513 \times 12 $$

A
$$6156$$

B
$$6158$$

C
$$6166$$

D
$$6168$$
Question 5
1 / -0

Round off 11,125 to the nearest thousand.

A
11,000

B
12,000

C
11,120

D
1,100

Solution

The given number is $$11,125$$.
The ones place of the number is $$5$$, the tens place is $$2$$, the hundreds place is $$1$$ and the thousands place is $$1$$.
Its digit at hundreds place is $$1$$, which is less than $$5$$.
So, we replace each of the hundreds, tens and ones digits by $$0$$ and keep the other digits as they are.
Therefore, the number $$11,125$$ is rounded off to nearest thousands as $$11,000$$.

Hence, option A is correct.
Question 6
1 / -0

Roman numeral for the greatest three digit number is

A
$$IXIXIX$$

B
$$CMIXIX$$

C
$$CMXCIX$$

D
$$CMIC$$

Solution

The largest $$3$$ digit number is $$999$$. Let's convert that into Roman numerals.

$$M = 1000, D = 500, C = 100, X = 10, V = 5$$ and $$I = 1.$$

$$900 = CM$$

$$90 = XC$$

$$9 = IX$$

$$900+90+9=999$$
$$(1000-100)+(100-10)+(10-1)$$

Therefore, $$999 = CMXCIX$$
$$(1000-100)+(100-10)+(10-1)$$

Let's crossverify,
$$CMXCIX=(1000-100)+(100-10)+(10-1)$$
$$=900+90+9=999$$
Question 7
1 / -0

$$CDI+V+C+X$$ is equal to

A
$$506$$

B
$$401$$

C
$$406$$

D
$$516$$

Solution

(D) $$CDI+V+C+X$$
$$401+5+100+10=516$$
Question 8
1 / -0

If 6 years hence a mans age will be 3 times the

age of his son and three years ago he was 9 times as old as his son, then what

is the present age of the man?

A
25 years

B
35 years

C
15 years

D
30 years
Question 9
1 / -0

Round off 24,500 to nearest thousands.

A
$$24,400$$

B
$$24,600$$

C
$$25,000$$

D
$$24,000$$

Solution

To round a number to the nearest thousand, the digit in hundreds place is considered. if it is greater than or equal to 5 we round it up and if is less than 5 we round it down.

In $$24,500$$ the hundreds place is $$5$$ and the thousands place is $$4$$.

Hence, increase the digit at thousands place by $$1$$ and replace each one of the digits in hundreds, tens and ones place by $$0$$

$$\therefore 24,500$$ is rounded off to nearest thousands as $$25,000.$$
Question 10
1 / -0

$$XIX+XXX=$$ ________

A
$$49$$

B
$$51$$

C
$$55$$

D
$$44$$

Solution

$$19+30=49$$

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Re-Attempt Weekly Quiz Competition

Knowing our Numbers Test - 19

Result

Knowing our Numbers Test - 19

Score

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SHARING IS CARING

Question 1

$$9990$$

$$99990$$

$$999990$$

None of these

Question 2

$$2380$$

$$21880$$

$$22880$$

$$23880$$

Question 3

$$ 5 \times 3 - (2 + 1) $$

$$(5 \times 3) - (2 + 1) $$

$$(5 \times 3) - 2 + 1$$

None of these

Solution

Question 4

$$6156$$

$$6158$$

$$6166$$

$$6168$$

Question 5

11,000

12,000

11,120

1,100

Solution

Question 6

$$IXIXIX$$

$$CMIXIX$$

$$CMXCIX$$

$$CMIC$$

Solution

Question 7

$$506$$

$$401$$

$$406$$

$$516$$

Solution

Question 8

25 years

35 years

15 years

30 years

Question 9

$$24,400$$

$$24,600$$

$$25,000$$

$$24,000$$

Solution

Question 10

$$49$$

$$51$$

$$55$$

$$44$$

Solution

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