unit test #1 review number system - ms. rogers'...

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Name:___________________________________ Date:____________________________ Pd:____ UNIT TEST #1 STUDY GUIDE: The Number System Absolute value Zero Pairs Additive Inverses Adding, Subtracting, Multiplying, and Dividing with Negative numbers (including rational numbers) Order of operations (including order of operations with rational numbers) Converting fractions to decimals and Converting decimals to fractions. Essential Questions: 1) Can you reverse the order of rational numbers when performing any operation and still get the same answer? 2) How do operations with integers compare to operations with rational numbers? 3) How does the opposite of a number differ from the absolute value of a number? 4) What happens when rational numbers are converted to decimals? 5) How is the order of operations applied to problems dealing with rational numbers?

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Page 1: Unit Test #1 Review Number System - Ms. Rogers' Websitecmsmsrogers.weebly.com/.../unit_test_1_review_number_system.pdf · Microsoft Word - Unit Test #1 Review Number System.docx Author:

Name:___________________________________  Date:____________________________  Pd:____  

UNIT  TEST  #1  STUDY  GUIDE:  The  Number  System  • Absolute  value  • Zero  Pairs  • Additive  Inverses  • Adding,  Subtracting,  Multiplying,  and  Dividing  with  Negative  numbers  (including  rational  numbers)  

• Order  of  operations  (including  order  of  operations  with  rational  numbers)  • Converting  fractions  to  decimals  and  Converting  decimals  to  fractions.  

 Essential  Questions:    1) Can  you  reverse  the  order  of  rational  numbers  when  performing  any  operation  and  still  get  the  

same  answer?              

2) How  do  operations  with  integers  compare  to  operations  with  rational  numbers?                3) How  does  the  opposite  of  a  number  differ  from  the  absolute  value  of  a  number?    

           

4) What  happens  when  rational  numbers  are  converted  to  decimals?              5) How  is  the  order  of  operations  applied  to  problems  dealing  with  rational  numbers?  

             

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Absolute  Value:    1)   −576             2)  − 4           3)   54 − −78          4)  − 5 − 9 + 12           5)  −25+ −46.5         6)  −56+ −56− 67              Zero  Pairs:      1)  Write  the  definition  of  a  zero  pair.          2)  Provide  an  example  of  a  zero  pair.        3)  Which  of  the  follow  are  zero  pairs?       a.  −15  !"#  15         b.  350  !"#   −350         c.  1  !"# − 11        

d.  250  !"#— 250         e.  −17.5  !"#  17.5           f.  −89  !"#  189        Additive  Inverses:    1)  What  is  the  definition  of  an  additive  inverse?          2)  Find  the  additive  inverses  of  the  following  numbers.    

  a.    −375         b.  -­‐23           c.  23.45       d.  !!  

   

  e.  67.6           f.  !"!           g.  −52.1907         h.  0.651  

 

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Adding,  Subtracting,  Multiplying,  and  Dividing  with  Negative  numbers  (including  rational  numbers)    1)  WITHOUT  SOLVING,  Detmerine  if  the  following  expressions  will  be  positive  or  negative.       a.  −21+ (−10)         b.  195.10− 196         c.  72(−12)        

d.  87÷−2           e.  − !!− − !

!         f.  −12.7(−1.12)  

   

g.  !"!!             h.  56.7+ −70         i.  −25− −17.25  

   2)  Solve  the  following.    Simplify  when  necessary!    

a.  (−12)  +  7         b.  3.4  −   −12.1       c.  (−10)  +  (−7)          

 

d.  − !!− !

!           e.  (−45)  +  9           f.  

!"!!− !"

!"        

         g.  (−5.6)  −  (−12.6)  +  (−6.6)           h.  −56÷−7          

i.  (−1)  −  (−40)         j.  (−13.6)  +  12  −  (−15.5)       k.  1 !!− 3 !

!"  

       l.  −25×−4         m.  (−1)  +  (−46)           n.  54÷−9          o.  3 ∙−15         p.  9.5  −  (−19.3)           q.  −12.75(−3.5)  

   

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r.  Maggie  owes  the  candy  store  $35.  Each  of  5  friends  will  help  her  pay  off  her  debt.  How  much  will  each  friend  pay?            s.  Roman  Civilization  began  in  509  B.C.  and  ended  in  476  A.D.  How  long  did  Roman  Civilization  last?              t.  Lilly  bought  4  pairs  of  blue  jeans  at  $32  each.  How  much  money  did  she  pay  the  clerk?            u.  In  the  Sahara  Desert  one  day  it  was  136°F.  In  the  Gobi  Desert  a  temperature  of  -­‐50°F  was  recorded.  What  is  the  difference  between  these  two  temperatures?            Order  of  operations  (including  order  of  operations  with  rational  numbers)    Use  the  order  of  operations  to  simplify  the  expression    

a.)  

!

4 + (24 ÷ 23) • 5     b.)  

!

"20 ÷ ("2 "18)     c.)  

!

(21" 9) " 4 • 3"6.5 " 2.7  

                   

d.)  

!

"8 + 32 + 4 • "3     e.)  

!

"5 + 4 • 2 + (6 " 4)   f.)  

!

("2)2 + "22 "15              

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g.)  

!

"56

+23         h.)  

!

"14"24"34       i.)  

!

112

• 2 25" 2  

                 

j.)   5÷23•!12+15     k.)   (!2.1".13)"5÷15   l.)  

!

0.3 1.29)  

               Converting  fractions  to  decimals  and  Converting  decimals  to  fractions    Covert  the  following  fractions  to  decimals  or  decimals  to  fractions.    Be  sure  to  simplify  when  necessary!      

a.  !"!""           b.  . 76           c.  

!!       d.  

!!  

                   

e.  . 95             f.  !"!"           g.  

!"!"         h.  

!"!"