INTEGERS. By Nicole , Bhumika, Natasha , Niharika, Mark, Ronak Group 6 Grade 6 Vidya Niketan School.
Nicole , Bhumika, Natasha , Niharika, Mark, Ronak
Vidya Niketan School
In the 16th century GirolamoCardanon, a famous Italian mathematician and physician, for the first time described negative numbers as fictitious and accepted the possibility of them being the solutions to equations.
He described this in his famous book ‘ArsMagnia’ which was published in 1545.History of Negative numbers
Same sign keep and add
Different signs, subtract
Take the sign of the bigger absolute value
Then you will be exact !
SPON works !
S = same signs P = positive
O = opposite signs N = negative
Same signs positive , opposite signs negative
Here is an example:
Gita is leading by 8 points.
The board game is coming to an end.
Rohit asks a question.
Gita answers it correctly and she gets +1!
Rohit gets -1.
Team Fireball scores a goal!
They get +1so Team Dragon gets -1.
Now Team Fireball gets -1 as Team Dragon scores a goal +1.
when the temperature is above 0,it is represented by + sign.
when the temperature is below 0,it is represented by – sign.
Many of the numbers we use represent situations which have directions.
These numbers are called directed numbers.
Once a number is chosen as positive(+), the opposite is chosen as negative(-).
Directed numbers are used in Mathematics, engineering, business , and sciences.
If a directed number is a whole number , it is called an integer.
40km due west = -40
30m above sea level= +30
30m below sea level= -30
29m due North= +29
29m due south= -29
If the budget exceeds a certain amount then it is negative(-).
If costs are within the budget, then it is positive(+).
We would like to thank you all for watching our presentation.
We would also like to thank Bhagya ma’am for giving us this opportunity .