1. Objective - To subtract integers. 1 = +1 + +1 = +1 + -1+ -1 = -1 + + + -1 = -1 - -1 = +1 - - - 1 = -1 - - - -1 = +1 - - - - -1 = -1 + - + 1 = -1 + + - -1 = +1 Odd # of Negatives = Negative Even # of Negatives = Positive Multiple Signed Numbers

2. Combine the following integers. 1) -3 - - 10 = 2) +6 - - 9 = 3) -4 + -7 = 4) +6 - 8 = 5) -3 - - 12 = 6) -7 - 12 = 7) +5 - -18 = 8) -14 - - 6 = 9) +7 - - 5 = 10) -7 + -8 = 11) -6 - - 4 = 12) -5 + 16 = 13) -17 - - 12 = 14) +13 - - 4 = +7+7 +15 -11 -2-2 +9+9 -19 +23 -8-8 +12 -15 -2 +11 -5 +17

3. Identify the property shown below. 1) 7 + ( 3 + 5 ) = ( 7 + 3 ) + 5 2) 3) 4) 5) 7 + 8 = 8 + 7 6) 12 + 0 = 12 7) Assoc. Prop. of Add. Mult. Prop. of Zero Comm. Prop. of Mult. Comm. Prop. of Add. Identity Prop. of Add. Identity Prop. of Mult.

4. Closure Property A set of numbers is said to be ‘closed’ if the numbers produced under a given operation are also elements of the set. Tell whether the whole numbers are closed under the given operation. If not, give a counterexample. 1) Addition 2) Subtraction 3) Multiplication 4) Division Closed 5 + 7 = 12 6 + 0 = 6 Not Closed 5 - 7 = - 2 Closed Not Closed 2 8 = 0. 25

5. 1) Addition 2) Subtraction 3) Multiplication 4) Division Closed 5 + -7 = -2 -6 + 10 = 4 Closed 5 - - 7 = 12 Closed Not Closed A set of numbers is said to be ‘closed’ if the numbers produced under a given operation are also elements of the set. Tell whether the integers are closed under the given operation. If not, give a counterexample. Closure Property 2 8 = 0. 25

6. a product or quotient involving numbers and/or variables. Terms are separated in expressions by addition or subtraction. Numerical terms Examples: 5 2.03 -17 Variable terms Coefficient - The numeral in a variable term usually preceding the variable. Examples: 3x -2y m 1 Term-

7. Identify the terms in the expressions below. 1) 2) 3)

8. Evaluate the functions below when x = -3, -2, -1, 0, 1 1) y = 2x - 3 2) y = 7 - x 3) y = -x - 4 x y -3 -2 -1 0 1 -9 x y x y -7-5-3-1 109876 -1-2-3-4-5