Name________________________

      RATIONAL NUMBERS  #1--RUBRIC

Directions:  Use any of the rational numbers/symbols below to create an expression that can be used to solve each particular situation.  You may use each number/symbol more than once, or not at all.  

32

2

×

+

-8

-4

0

-32

-2

÷

8

4

1)	 A cookie jar contains 8 cookies.  There are 4 children.  How many cookies will each child receive?	 

       8 4 = 2	

2)	Liam’s bank account has a negative balance of $4.  He has to pay a penalty to the bank of $4.  What is his account balance after the penalty?

-4 – 4 = -8	or 	-4 + (-4) = -8	

3)	Marvin’s football team lost 2 yards on 4 consecutive plays.  How many total yards did his team gain?

-2 x 4 = -8	or 	-2 + -2 + -2 + -2 = -8

4)	The temperature dropped 8 degrees on each day from Monday-Thursday?  How many degrees did the temperature drop altogether?

                                                        4 x (-8) = -32	or 	-8 + -8 + -8 + -8 = -32		
	
5)	There were 32 cookies in the cookie jar.  Four different children each ate 8 of the cookies.  How many cookies are left in the cookie jar?

  32 – 4 x 8 = 0	or 	32 – 8 – 8 – 8 – 8 = 0	

6)	Matthew had $8 in his bank account.  On Monday, he deposited $8.  On Tuesday, he deposited $8.  On Wednesday, he withdrew $32.  What is the current balance on is account?

8 + 8 + 8 – 32 = -8		

7)	Ethan’s football team lost 8 yards on 2 consecutive plays.  What was their average loss on each play?

    -8  2 = -4

8)	The temperature dropped 32 degrees during the last 8 days.  If the temperature fell by the same amount each day, how many degrees did the temperature fall each day?

    -32  8 = -4

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