Convert numbers between Indian and standard numbering systems and write numbers in Roman numerals.

Question

ScanSolve AI Tutor · Accepted Answer

Here are the solutions for questions 3 and 4.

3. Fill in the blanks:

Convert one million to lakh.
We know that $1 \text{ million} = 10 \text{ lakh}$ .
$\text{One million} = \boxed{10} \text{ lakh}$
Convert sixty lakh to million.
Since $10 \text{ lakh} = 1 \text{ million}$ , then $60 \text{ lakh} = \frac{60}{10} \text{ million} = 6 \text{ million}$ .
$\text{Sixty lakh} = \boxed{6} \text{ million}$
Convert one lakh to thousand.
We know that $1 \text{ lakh} = 100 \text{ thousand}$ .
$\text{One lakh} = \boxed{100} \text{ thousand}$
Convert 5 hundred thousand to lakh.
Since $100 \text{ thousand} = 1 \text{ lakh}$ , then $500 \text{ thousand} = \frac{500}{100} \text{ lakh} = 5 \text{ lakh}$ .
$\text{5 hundred thousand} = \boxed{5} \text{ lakh}$
4. Write in Roman numerals:
Write 49 in Roman numerals.
$49 = 40 + 9$ .
40 is written as XL (50 - 10).
9 is written as IX (10 - 1).
So, $49 = \boxed{\text{XLIX}}$ .
Write 100 in Roman numerals.
The Roman numeral for 100 is C.
So, $100 = \boxed{\text{C}}$ .
Write 90 in Roman numerals.
$90 = 100 - 10$ .
100 is C and 10 is X. When a smaller numeral is placed before a larger numeral, it is subtracted.
So, $90 = \boxed{\text{XC}}$ .
Write 59 in Roman numerals.
$59 = 50 + 9$ .
50 is written as L.
9 is written as IX.
So, $59 = \boxed{\text{LIX}}$ .

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