| A | B |
|---|
| RULE FOR ADDING TWO POSITIVE NUMBERS | ADD AND KEEP THE SIGN ( POSITIVE ) > FOR EXAMPLE : ( + ) + ( + ) = + , 25 + 3 = 28 |
| RULE FOR ADDING TWO NEGATIVE NUMBERS | ADD AND KEEP THE SIGN ( NEGATIVE ) > FOR EXAMPLE : ( - ) + ( - ) = - , - 4 + ( -12 ) = -16 |
| RULE FOR ADDING ONE NEGATIVE AND ONE POSITIVE NUMBER | SUBTRACT AND KEEP THE SIGN OF THE NUMBER WITH THE GREATEST ABSOLUTE VALUE > FOR EXAMPLE : 11 + ( -4 ) = 7 , OR 2 + ( -14 ) = -12 |
| RULE FOR SUBTRACTING SIGNED NUMBERS | CHANGE ALL SUBTRACTION PROBLEMS TO ADDITION PROBLEMS > EXAMPLE # 1 : ( + ) - ( + ) = ( + ) + ( - ) , 26 - 3 = 26 + ( -3 ) = 23 ( POSITIVE LARGER ) , 11 - 14 = 11 + ( -14 ) = -3 ( NEGATIVE LARGER ) , EXAMPLE # 2 : ( - ) - ( - ) = ( - ) + ( + ) , -5 - ( -9 ) = -5 + 9 = 4 ( POSITIVE LARGER ) , -21 - ( -7 ) = -21 + 7 = -14 ( NEGATIVE LARGER ) , EXAMPLE # 3 : ( + ) - ( - ) = ( + ) + ( + ) , 17 - ( -5 ) = 17 + 5 = 22 ( KEEP SIGN ) , EXAMPLE # 4 : ( - ) - ( + ) = ( - ) + ( - ) , -5 - 12 = -5 + ( -12 ) = -17 |
| PRODUCT | THE RESULT OBTAINED BY MULTIPLYING TWO OR MORE QUANTITIES TOGETHER |
| QUOTIENT | THE RESULT OF DIVISION ; THE NUMBER OF TIMES ONE QUANTITY IS CONTAINED IN ANOTHER |
| RULE FOR MULTIPLICATION AND DIVISION | THE PRODUCT OR QUOTIENT OF TWO NEGATIVE NUMBERS , OR TWO POSITIVE POSITIVE NUMBERS , WILL ALWAYS BE POSITIVE . THE PRODUCT OR QUOTIENT OF ONE POSITIVE AND ONE NEGATIVE NUMBER WILL ALWAYS BE NEGATIVE |
| ABSOLUTE VALUE | THE ABSOLUTE VALUE OF A REAL NUMBER (n) IS THE NUMBER'S DISTRANCE FROM THE ORIGIN ON A NUMBER LINE . IT IS SHOWN BY THE SYMBOL ( n ) . THE ABSOLUTE VALUE OF A POSITIVE NUMBER , SUCH AS 50 , IS THE NUMBER ITSELF l 50 l = 50 . IF A NUMBER IS NEGATIVE , DROP THE NEGATIVE SIGN TO FIND ITS ABSOLUTE VALUE l -50 l = 50 . IF A NEGATIVE SIGN IS OUTSIDE THE ABSOLUTE VALUE SIGN , MULTIPLY THE ABSOLUTE VALUE OF THE NUMBER BY -1 . - l -50 l = ( -50 ) = -50 |
