6-1C, 6-1D, and 6-2A Writing Expressions and Properties.

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Presentation transcript:

6-1C, 6-1D, and 6-2A Writing Expressions and Properties

Expressions Using Models So, Kevin has c + 6 baseball cards. This is called defining the variable.

Think Pair Share Discuss with your shoulder partner how you would create a model and then write an expression for this scenario. So, Sam sent m – 10 messages in July.

Helpful Key Words Addition Subtraction Multiplication Division Greater than More than Total ____ and ____ Less than Fewer than Difference __#__ times Double, triple, etc. Half Fraction (ex. One third of ___)

Check Your Progress b – 4; b represents Bulls score 12f; f represents the number of feet s + 8; s represents the shirt cost

Round Table  Turn to page 334  Solve #1-8 on a piece of notebook paper. Take turns solving each problem with your table mates.

Round Table Answers Remember, your variable can be any letter, but you must DEFINE it!!

BRAIN BREAK

Properties

Examples Determine if each set of expressions is equivalent. If so, tell what property is applied. If not, explain why. The expressions are EQUIVALENT because of the ASSOCIATIVE PROPERTY. The expressions are NOT EQUIVALENT because the Commutative Property is not true for division. The expressions are NOT EQUIVALENT because the Associative Property is not true for subtraction. The expressions are EQUIVALENT because of the IDENTITY PROPERTY.

Mid Chapter Check  Take out a piece of notebook paper and put your proper heading in the upper right hand corner.  Turn to page 338 in your red book.  Solve #2, 4, 6, 8, 13, 14, 18, 19

HOMEWORK  WB pages 93 and 97 ODDS  Due Monday (white) or Tuesday (green)