Course Content
Unit 1 – Numbers
A number system is a writing system for denoting numbers logically using digits or symbols.
0/8
Roman numbers up to 20
03:48
Write even or odd numbers
02:03
Identify the place values of numbers up to 6-digits
04:42
Compare two numbers using symbols
03:41
Numbers in ascending and descending order
08:03
Represent and identify the number on a number line
04:16
Lets revise!
Activity (Round off the number)
06:46
Unit 2 – Numbers Operations
Arithmetic operations is a branch of mathematics, that involves the study of numbers, and operation of numbers that are useful in all the other branches of mathematics. It comprises operations such as Addition, Subtraction, Multiplication, and Division.
0/9
Add numbers up to 4-digits (with and without carrying)
05:57
Add numbers up to 100 using mental calculation strategies
03:30
Subtract numbers up to four digits
04:11
Subtract numbers up to 100 using mental calculation strategies
03:30
Multiply 2-digit numbers by 1-digit number
04:25
Multiply a number by zero
02:38
Divide 2-digit numbers by 1-digit numbers
08:44
Lets revise!
Activity (Multiplication)
00:00
Unit 3 – Fractions
A fraction is used to represent the portion/part of the whole thing. It represents the equal parts of the whole
0/6
Common fraction
04:29
Identify equivalent fractions
06:28
Differentiate between proper and improper fractions
02:02
Add and subtract two fractions with same denominators
07:27
Lets revise!
Activity(Fraction)
03:04
Unit 4 – Measurement Of Length, Mass and Capacity
We use grams(g) and kilograms(kg) to measure mass (or weight). We use centimetres(cm), metres(m) and kilometres(km) for length. We use milliliters (ml) or liters (L) for capacity (how much liquid).
0/6
Measure and write standard units of length
03:21
Addition and subtraction of units of length
04:05
Read standard units of mass/weight
05:42
Standard units of volume (liter and milliliter)
04:54
Lets revise!
Activity(Measurement)
Unit 5 – Time
Time can be defined as an ongoing and continuous sequence of events that occur in succession, from past through the present, and to the future.
0/4
Use a.m. and p.m. to record the time for 12-hours clock
02:59
Days and dates from the calendar
02:40
Lets revise!
Activity(Telling time)
03:17
Unit 6 – Geometry
Geometry is a branch of mathematics that studies the sizes, shapes, positions, angles, and dimensions of things.
0/5
Recognize point, line segment, ray and angles
03:32
Identify circle, its radius and diameter
03:52
Calculate perimeters
06:48
Lets revise!
Activity(Geometry)
Unit 7 – Data Representation
Data handling is the process of collecting, organizing, and presenting data.
0/2
Read and interpret a picture graph
04:59
Lets revise!
Grade 3 – Mathematics
About Lesson

Roman Numerals 1 to 20

Roman Numerals 1 to 20 is the list of numbers from 1 to 20 represented in their corresponding roman numeral translation. Roman Numerals 1 to 20 will help students to learn numbers to roman numeral translations effortlessly. In this article, we have simplified all the rules that are followed while writing roman numerals from 1 to 20.

Roman Numbers 1 to 20 Chart

We have provided printable roman numbers 1 to 20 charts to help students in prioritizing and planning their revisions.

Roman Numbers 1 to 20

Roman Numerals from 1 to 20

Roman numerals 1 to 20 can help understand numbers to roman numerals conversion for numbers up to 20. The list of roman numerals from 1 to 20 is provided in the table below.

List of Roman Numerals from 1 to 20

1 = I 2 = II 3 = III 4 = IV 5 = V
6 = VI 7 = VII 8 = VIII 9 = IX 10 = X
11 = XI 12 = XII 13 = XIII 14 = XIV 15 = XV
16 = XVI 17 = XVII 18 = XVIII 19 = XIX 20 = XX

How to Write Roman Numerals 1 to 20?

Roman numerals 1 to 20 can be obtained by using any of the two given below methods:

  • Method 1: In this method, we break 18 into the least expandable form, write their respective roman letter and add/subtract them, i.e. 18 = 10 + 5 + 3 = X + V + III = XVIII
  • Method 2: In this method, we consider the groups of numbers for addition such as: 18 = 10 + 8 = X + VIII = XVIII

Any of the above two methods can be used for writing Roman Numerals from 1 to 20.

Rules to Write Roman Numerals from 1 to 20

Certain rules are to be followed while writing roman numbers from 1 to 20. These rules are explained here in detail.

  • When a bigger letter precedes a smaller letter, the letters are added. For example: DI, D > I, so DI = D + I = 500 + 1 = 501.
  • When a smaller letter precedes a bigger letter, the letters are subtracted. For example: IX, I < X, so IX = X – I = 10 – 1 = 9.
  • When a letter is repeated multiple times, they get added. For example: CC = C + C = 100 + 100 = 200
  • The same letter cannot be used more than three times in succession. V, L, and D cannot be repeated, they appear only once.

Roman Numerals 1 to 20 Examples

  1. Example 1: Using your knowledge of Roman numerals 1 to 20, Find the value of XVI – V.

    Solution:

    XVI = 10 + 6 = 16 and V = 5. Therefore, XVI – V = 16 – 5 = 11.
    Now, XI = 10 + 1 = 11

  2. Example 2: Using Roman numerals 1 to 20 chart, find the product of III and IV.

    Solution:

    III = 3 and IV = 4
    Now, III × IV = 3 × 4 = 12
    Since, 12 = 10 + 1 + 1 = X + I + I = XII
    Therefore, the product of III and IV is XII.

  3. Example 3: Find the Value of XII + (XI – XIV) + VIII.

    Solution:

    Using Roman numerals 1 to 20 chart: XII = 10 + 2 = 12, XI = 10 + 1 = 11, XIV = 10 + 4 = 14, VIII = 8.
    Therefore, XII + (XI – XIV) + VIII = 12 + (11 – 14) + 8 = 17
    Now, 17 = 10 + 5 + 1 + 1 = X + V + I + I = XVII

  4. Example 4: Find all Perfect Cubes between Roman Numerals from 1 to 20.

    Solution:

    The list of all perfect cubes from 1 to 20 is 1, 8. Therefore, all perfect cubes between roman numerals 1 to 20 are I, VIII.

Exercise Files
read-write-roman-numbers-1-to-20.pdf
Size: 126.83 KB
match-the-roman-numbers-1-to-20.pdf
Size: 117.74 KB
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