How to Write 45 in Roman Numerals?

Writing 45 in Roman numerals is simple once you know the basics. Roman numerals use combinations of letters to represent numbers. For 45, the symbol is XLV, where XL represents 40 (50 minus 10) using subtraction, and V adds 5 to make 45. Unlike standalone symbols like 100 (C), 45 demonstrates the use of both subtraction and addition in Roman numerals. Learning these numbers not only enhances understanding of ancient numbering systems but also makes math fun and engaging for students. Let’s learn more about how Roman numerals work.

How to Write 45 in Roman Numerals?

To write 45 in Roman numerals, you use the combination XLV. This is formed by subtracting X (10) from L (50) to make 40 (XL), and then adding V (5) to reach 45. Unlike numbers like 40 (XL) or 50 (L), which use subtraction, 45 is written by combining subtraction and addition. Once you understand the basic rules of Roman numerals, writing 45 becomes easy and a great way to connect with the ancient system of numbers.

Number	Roman Numeral
45	XLV

Also Read: How to Write 100 in Roman Numerals?

How to Convert XLV to Number

To convert XLV from Roman numerals to a number, you need to know the values of the symbols and add or subtract them accordingly. In XLV:

• X = 10
• L = 50
• V = 5

In this case, X (10) is subtracted from L (50) to give 40 (XL), and then you add V (5).

So, 40 + 5 = 45.

Roman numerals work by combining these symbols in a specific way, either adding or subtracting, to represent numbers. Once you understand the values, converting Roman numerals like XLV into their numerical form becomes easy!

XLV = 45So, if you see XLV alone, it directly represents the number 45

Also Read: Roman Numerals 1 to 1000: Download Free PDF

Exercise on 45 in Roman Numerals

Let us practice some questions on Roman Numerals here.

Addition and Subtraction

Add/subtract the following numbers and answer in Roman Numerals

1. 10 + 35 = ___
2. 50 – 5 = ___
3. 60 – 15 = ___
4. 100 – 55 = ___

Answers:

1. XLV
2. XLV
3. XLV
4. XLV

Convert to Roman Numerals

Convert the following numbers into Roman numerals:

1. 45
2. 55
3. 65
4. 75

Answers:

1. 45 = XLV
2. 55 = LV
3. 65 = LXV
4. 75 = LXXV

Convert to Numbers

Convert the following Roman numerals to numbers:

1. XLV
2. LV
3. LXV
4. LXXV

Answers:

1. XLV = 45
2. LV = 55
3. LXV = 65
4. LXXV = 75

Match the Following

Match the following numbers to Roman numerals:

Numbers	Roman Numerals
(i) 45	(a) LXV
(ii) 65	(b) LV
(iii) 55	(c ) LXXV
(iv) 75	(d) XLV

Answers:

i) 45 = (e) XLV

(ii) 55 = (f) LV

(iii) 65 = (g) LXV

(iv) 75 = (h) LXXV

Check other blogs on Roman Numerals:

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