I.cirele the letter before the word that isn't in the same group with others

1. a.knee         b.villa               c.ear                        b.shoulder

2. a. better           b.worse              c.hotter              d.warm

II. find the word ưhich the underlined part is pronounced differently from the others

3. a. phones         b. streets          c.books          d.makes

tổng của 1-2+3-4+5-6+...+47-48+49-50

1). 20-[4* +(x-6)]=90

2). (х +3).(2х -4)=0

3). 1000:[30+(2" -6)]=3 +4

4). 3x+10 = 4?

5). 164– 2?(x-5)= 5.16

6). 4.2* -3 125

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