Symbols used in Maths

Symbols used in Mathematics

+ ; add
- ; subtract
x ; multiply/ times
÷ ; or / ; divide
= ; is equal to
≠ ; is not equal to
≈ ; approximately equal to
< ; is less than
> ; is grater than
≥ ; greater than or equal to
≤ ; less than or equal to


Well that's it!
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See you next time. 🙂 

What is Area & how to calculate it.

In Mathematics, Area is the quantity that expresses the extent of a two-dimensional figure or shape in the plane.

Surface area is its analog on the two-dimensional surface of a three-dimensional object.

SI base unit:   1 m^2

SI unit:            square metre


You may find area of some objects with below formulas.

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Speed 🛑🚦🚘

* Lets accelerate to 60 bro… woohoo 😜

* Don’t you see speed limits? 🛑👮️

☝️ Have you heard of such things?

Today we are talking about Speed.

Simply, speed is the “distance per unit time”

Speed ​​= (Distance) / (Time)

* Unit Time —> Can be in one second/ per hour.

There are several ways you can tell speed. Some of these,

• Kilometers per hour (km / h or kmph)
• Meters per second (m / s or mps)

The speed limits we see on the road are in kmph …

Like 40 kmph, 50 kmph, 70 kmph.

Now look at the following examples.

1. A bus took 21 minutes to reach the first 14 km and the remaining 22 km took 14 minutes.

i. The entire journey was in hours?
ii. Bus speed?

Answer..


First let’s see how to turn the minutes into hours.

60 minutes = 1 hour
60 min = 1 h

1min = 1/60 h
20 min = 20/60 h
46 min = 46/60 h

i. Total time spent
= 21/60 + 14/60 h
= (21 + 14) / 60 h
= 35/60 h
= 0.583 h

ii. The speed of the bus
= (Total Distance) / (Time)
= (14 km + 22 km) / (0.583 h)
= 36 km / 0.583 h
= 61.75 kmph

I think now it it clear for you what is the Speed!

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Power of 10 [10^n]

Today we are talking about the lesson of powers of 10.

You can see such as 21.6k and 1.3M on the social medias.

you see all the time on Facebook, Instagram, LinkedIn, Youtube etc..

If it is 21k on facebook, it means 21?  🤔🤔

Nooooo 👋😤


But lot of people think so … oh 😜

Simply explain,

k (kilo) = thousand = 1,000 = 10 ^ 3
M (Mega) = Million = 1,000,000 = 10 ^ 6

As above theories, 21.6k means 21,600 reactions.

1.3M Views means 1,300,000 views.

“Let’s see how it goes.”

21.6K = 21.6 x 10 ^ 3 = 21.6 x 1,000 = 21,600

1.3M = 1.3 x 10 ^ 6 = 1.3 x 1,000,000 = 1,300,000

Now see below example to clear more…

                               reference: A facebook
                               post in Mr.Tom Cruise
                               Facebook page

25K like, 25K means 25,000 likes.

1.8K comments, 1.8K means 1,800 comments.

6.7K shares, 6.7K means 6,700 shares.

3M Views, 3M means ohhit is 3,000,000 views.



I think now it is clear, so please Like 👍, Comment 📑 and Share ➡️ to see others.

#MathsforLife  #Mathematics  #Powersof10