scribe post for october 30th, by Azra
we learn in math class about integers. Positive and about negative integers. First we learn how to add integers, here some example for positive integer, first we have to know something
(+) + (-) = (-)
(-) + (-) = (+)
(+) + (+) = (+)
some example for positive integers
(+) + (-) = (-)
(-) + (-) = (+)
(+) + (+) = (+)
some example for positive integers
(+3) + (+9) = (+12)
(+5) + (+5) = (+10)
(+2) +( 4) = (+6)
(+4) + (+9) =(+13)
and then we do more positive integer
earn 30 doller lose 5 doller = left (+25) or 25 doller
have 5 orange lost 2 orange = left 3 orange
then we lern about how to draw integers time line I will show you time line pictures after first I want to show you how can we subtract integers, some example are
(-5) - (-9)
=(-5) + (+9) = (+4)
(-8) - (+6)
=(-8) + (-6) = (-14)
(-2) - (0)
= (-2)
Now I want talk about 0 pairs, some example for 0 pairs
(-6) + (+6) = (0)
(+100) + ( -100) = (0)
(+1000) + (-1000)= (0)
we did stenderd form in integers like
-2 -9 =-11
=+6 -7 = -1
-6 +2 - (-2)+ 3
=-6 +2 + (+2) +3
=-6 +7
=+1
we had quiz about negative and positive integers, like
(+9) + (+6) = (+15)
(+2) + (0) - (-4)
(+2) + (0) + (+4)
(+6)
(-5) - (-5)
= (-5) + (+5)
= (0)
(+6) + (+9) - (-4) - (-8)
=(+6) + (+9) + (+4) + (+8)
=(+27)
more about integers
rises 3 degree drop 2 degree = left 1degree
have 50 books give a friend 10 books = left 40 books
now I want to talk about time line, how can we add integers in time line
(+2) + (+1) = (+3) in time line
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