Mathematical symbols:
- Sum = +
- + means add
- Difference -
- - means subtract
- Product = x
- x means to multiply
- Quotient = ÷
- ÷ means to divide
Rules for rounding off
If the digit to the right of the place you are rounding off to is less than 5, round down.
If the digit to the right of the place you are rounding off to is 5 or more, round up.
Useful squares
Principal units:
kilo = thousand
milli - thousandth
centi - hundredth
metre - measure
Capacity:
- 1 litre = 1000 millilitres or 1 l = 1000ml
- 1 millilitre = 0,001 litre or 1 ml = 0,001 l
- 1 kiloliter = 1000 litres or 1 kl = 1000 l
- 1 litre = 0,001 kiloliter or 1 l = 0,001 kl
Percentages:
100 % = 1 whole
75 % = 
50 % = 
25% = 
10% = 
5 % = 
Formulas:
To calculate:
Area of a rectangle: A = lw l=length , w = width (breadth)
Area of a square: A = l x l l = length
Area of a triangle: A = 1/2 b x h b=base, h= height
Volume of a cuboid: V= lbh l= length, b= breadth, h=height
Volume of a cube: V = lxlxl l = length
You got a 1.55% upvote from @postpromoter courtesy of @apteacher!
Want to promote your posts too? Check out the Steem Bot Tracker website for more info. If you would like to support the development of @postpromoter and the bot tracker please vote for @yabapmatt for witness!
Very good this resource that presents, a very practical and simple way to teach the basic operations of mathematics.
Thank you.
Congratulations !
your post was resteemed by @resteemza
Please upvote this reply to help us grow