Lesson 2. Binary Numbers | Maths Session for Grade 09

About DP Education
The DP education was born out of the passion of Mr. Dhammika Perera to provide an innovative online math learning platform for school students to enhance their math skills. School students can access the government math curriculum from grades 6-13 at their own convenience for free.

DP Education (in English)
Students who wish to learn Math can watch the video and learn the subject at their convenience. Here math is taught in an easy way and in simple language.
You can also watch and learn math in Sinhala and Tamil languages by clicking to the links below.

CHAPTER DESCRIPTION (in this video)

This video is a lesson on Binary Numbers - Grade 9.
By studying this lesson you will be able to
• identify binary numbers,
• convert a decimal number into a binary number,
• convert a binary number into a decimal number,
• add and subtract binary numbers,
• identify instances where binary numbers are used.

Maths can not be learnt if you leave in between the class. So, we have provided break in between our online class at regular intervals.

Please go through the previous chapter on Number Patterns here

Please go through the next chapter on Fractions here

You can ask your doubts and any questions related to this chapter in the message section below, and our teacher will reply back at the earliest. Also, do attend our live QnA Sessions, which are conducted from time to time, and we post the announcement on our social media platforms.

The link is given below:-

You can also visit Mr. Dhamikka Perera's Youtube channel to know more about his vision on DP Education and the initiative at

For our graduate, postgraduate and upskilling students, we also provide a large number of free courses from various prestigious universities across the world through our website:

Our Motto is "Learn what you love" and we will work hard to make learning enjoyable for you.

#DPEducation #Grade9MathsEnglish #BinaryNumbers

[antaniogomez]

I am well cleared with the lesson and it was so good for me so I could check whether my answers are correct and learn the mistakes from your teaching, thank you mam

[laseya_]

This is so helpful, interesting class for us. Thank you so much!💞

[hascodehiwela]

I hate maths before. now my favourite subject is maths after studying with you

[anushawasanthi]

Thank u teacher for supporting us I like the way u teach it's very easy to understand

[manjularuwanwella]

Really I couldnt understand how do the subraction of binary numbers, but now I know how to do it easily because of you, thank you so much for the help!!!

[im_mick_y_off.xe]

Thank u teacher for supporting us I like the way u teach it's very easy to understand Your teaching very clear and understand this is very helpful to my studie The Maths Thank You So Much Teacherr

[officialzasf]

Thanks Very Much I did not attend for my classes so I studied with this thank you soooo much

[anitaantonipillai]

Thank you teacher. It is so easy to understand the way you explain the methods

[tonyilango]

Thank you, teacher, very interesting to study in this way👌👌

[shakirmuhammedh]

Thanks alot mam very interesting to study this from u

[sugathamarasinghe]

thankyou madam . i like the way of your teaching it was so good .

[harithajayasundara]

Thank you very much madam. Lesson is very clear and very easy to understand.

[halayaschannel]

It is lot of fun with you teacher going extra classes are waste your class is so great thank you DP EDUCATION​

[priyankaraekanayaka]

Thank you madam for teaching these lessons, It is very helpful.

[lakmajayodya]

I couldn't come to my school and I couldn't join with this lesson in school the I couldn't understand the binary numbers, now I know binary numbers lesson thank you very much dp education 💕

[malkimalki]

Your teaching very clear and understand 😇thank you teacher 😇

[anuradhagamage]

Thank you very much mam....This is exactly very useful for me..♥️

[zee_naa]

thank you so much teacher this method is great for me 😇

[fahmahilmy]

Thanks a lot teacher😍😘😗. The class was so great, understandable & it's very clear. Thank you teacher

[dimuthukarunarathna]

thank you very much this is so helpful lesson to us