Unit+1

=__CHAPTER 1__=


 * ===Adding two positive numbers=== || ===Adding two negative numbers=== ||
 * [[image:add_2_pos-a.png width="400" height="143" align="left"]] || [[image:add_2_neg-a.png width="384" height="166" align="right"]] ||
 * [[image:add_2_pos-b.png width="343" height="200"]] || [[image:add_2_neg-b.png width="317" height="233" align="right"]] ||

subtracting two negative numbers
-4--3=-1 the two negative signs in the middle mean you add, this looks like this -4+3=-1

subtracting a negative from a positive number
Its the same as adding -1 to -4 so it looks like this -4+-1=-5

4-(-4)
with two negative signs next to each other you add 4 and 4 to get 8 it looks like this 4+4=8 6-(-8)= 6+8=14

rounding decimals


By, Owen Bass

hope this helps sorry i couldnt get the pictures but this is for X and / powers of ten

= =

http://www.mathsteacher.com.au/year7/ch06_decimals/07_mult_pow/ten.htm

By, Colton Saunders


 * [[image:Mult_pow_10.jpg width="432" height="324"]] || [[image:Div_pow_10.jpg width="432" height="324"]] ||

In preparation for Algebra, you may want to think of division as a form of multiplication

 * [[image:Mult_is_div.jpg width="432" height="324"]] || [[image:Mult_is_div2.jpg width="432" height="324"]] ||