Do Now 9/18/13 Take out HW from last night. Text p.14, #19-32 all, 46-52 evens, 58 & 59 Copy HW in your planner. Text p.16, #1-16 all Quiz sections 1.1 & 1.2 Wednesday In your journal, simplify the following expression. Use the distributive property when simplifying the last step.

Homework Text p.14, #19-32 all, 46-52 evens, 58 & 59 19) identity 20) associative 21) associative 22) commutative 23) identity 24) commutative 25) 1600 26) 44 27) 900 28) 58 29) 163 30) 117 31) 135 32) 70 46) 5; commutative 48) 3; distributive 50) 13; associative 52) 6; distributive 58) B 59) H

Objective SWBAT review the order of operations and identify properties of rational numbers.

Section 1.1, Order of Operations the rules established to simplify an expression involving more than one operation 10 ÷ 2 · 6 (4 + 7 · 6)²

1 2 3 4 PEMDAS Order of Operations Perform operations within grouping signs. ( ) parentheses, [ ] brackets, fraction bar 2 Evaluate powers. 3 Multiply and divide in order from left to right. 4 Add and subtract in order from left to right.

Section 1.2 “Properties of Numbers” 1). Commutative Property 2). Associative Property 3). Identity Property 4). Distributive Property

Think of it as COMMUTING to work! Commutative Property The order of numbers when you add or multiply numbers does not change the solution. 2 + 3 = 3 + 2 a + b = b + a 2 · 3 = 3 · 2 ab = ba Think of it as COMMUTING to work!

Think of it as changing your GROUP of friends! Associative Property REGROUPING of numbers when adding or multiplying does not change the solution Think of it as changing your GROUP of friends! (2 + 3) + 4 = 2 + (3 + 4) (a + 10) + 7= a + (10 + 7) (5 · 6) · 10 = 5 · (6 · 10) 5(8c) = (5·8)c

Identity Property 5 + 0 = 5 3 x 1 = 3 “No change” property Think of it as "I" LOOK IN THE MIRROR and see myself! For addition, the sum of any number plus 0 is that number. a + 0 = 0 + a = a For multiplication, the product of any number times 1 is that number. b · 1 = 1b = b

Distributive Property You can use the distributive property to multiply numbers mentally by breaking apart one of the numbers and writing it as a sum or difference. 7(14) = 7(10 + 4) = 7(10) + 7(4) = 70 + 28 = 98

ZAP!!! In your groups, select one problem at a time from the cup. Solve the problem. If you get it right, you receive a point and get to keep the stick. Others should do the problem to see if the answer is correct. If you pull the ZAP!! you lose all of your sticks! Try not to get Zapped!! Most points at the end wins!! Reverse – switch the order in which you pick sticks Skip – miss a turn Give a Stick – give one of your sticks to another player Take a Stick – take a stick from another player Zap – put all your sticks back in the cup.

NJASK7 Prep Homework Text p.16, #1-16 all