the integer family developed by ivan seneviratne
TRANSCRIPT
The Integer Family
Developed byIvan Seneviratne
Integer Addition
A Positive Plus a Positive
You add and make it positive.
+3 + +9 =+3 + +9 = +12
A Negative Plus a Negative You add and make it negative.
-3 + -9 =-3 + -9 = -12- 3 - 9 = -12
A Positive Plus A Negative
Subtract the absolute values and then you take the sign of, the farthest one from zero.
+3 + -9 =
-3 + +9 =
+3 + -9 = -6
-3 + +9 = +6
Integer Subtraction
Developed byIvan Seneviratne
Integer SubtractionYou have to add the opposite. Keep it, change it, change it. Then follow the adding rules.
+3 -+9 =+3 -+9 = -6
-3 - - 9 =-3 - - 9 = +6
+3 -+9 =
-3 - -9 =
-3 - +9 =
+3 - -9 =
+3 -+9 = -6
-3 - -9 = 6
-3 - +9 = -12
+3 - -9 = 12
Integer Multiplication
& Division
Multiplication and DivideThe signs the same its positive.
-3 (-7) =
Its negative if they’re not.
3 (7) =
-3 (7) = -21
3 (-7) =
-3 (-7) = +21
3 (7) = +21
-3 (7) = 3 (-7) = -21
-3 (-9) =
-3 - +9 =
+3 - +9 =
-3 (-8) =
-3 - +9 = -12
+3 - +9 = -6
-3 (+9) =
-2 (-9) =
-3 - -9 =
+3 (+9) =
-3 (+9) = -27
-3 (-8) = 24
-3 (-9) = +27
+3 (+9) = +27
-3 - -9 = +6
-2 (-9) = +18
-3 - -9 =
-3 - + 9 =
+2 - -9 =
-7 - - 9 =
-3 - -9 = -6
-3 - + 9 = -12
+2 - -9 = -7
-7 - -9 = +2
2 (-9) =
-3 (8) =
+4 (-9) =
+5 (+6) =+5 (+6) = +30
2 (-9) = -18
+4 (-9) = -36
-3 (8) = -24
This presentation is developed by Ivan Seneviratne © 2006 purely for personal [email protected]