Question

(2 2/3+4,5)*(5 1/10 -3,9)=

(1 1/4-1 1/3):10=

6 2/9*(5-4 1/2 :9)=

[(2 1/2)do potęgi 2 -3/4]:11=

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Answer 1

( 2 2/3 + 4,5)*(5 1/10 - 3,9) = ( 2 20/30 + 4 15/30)* 1 2/10 = 7 5/30 * 1 2/10 = 86/10 = 8 6/10 = 8 3/5

(1 1/4 - 1 1/3) : 10 = ( 1 3/12 - 1 4/12 ) : 10 = - 1/12 : 10 = - 1/12 * 1/10 = - 1/120

6 2/9 * ( 5 - 4 1/2 : 9 ) = 6 2/9 * ( 5 - 1/2 ) = 6 2/9 * 4 1/2 = 28

( ( 2 1/2 ) do potegi 2 - 3/4 ) : 11 = ( 25/4 - 3/4 ) : 11 = 22/4 : 11 = 22/4 * 1/11 = 2/4 = 1/2

Answer 2

A) (8/3+45/10)*(4 11/10-3 9/10)= (80/30+135/30)*1 2/10= (215*12/10)=258


b) (1 1/4-1 1/3) : 10= (5/4-4/3) :10=15/12-16/12) :10= -1/12:10=-120

c) 6 2/9*(5-4 1/2 :9)= 6 2/9 * (5- 9/2:9/1)= 6 2/9* (5-9/1*1/9)= 6 2/9*5= 56/9*5/1= 280/9=31 1/9

d) [(2 1/2)do potęgi 2 -3/4]:11= [(5/2)do potęgi-3/4]:11=[25/4-3/4]:11=22/4:11=2/4=1/2

Answer 3

(2 2/3+4,5)*(5 1/10 -3,9)= (2 2/3+4 5/10)x(5 1/10-3 9/10)=(2 1/3 + 5)x (4 11/10-3 3/10)= 7 ⅓ x 1 ⅘= 21/3 x 9/5~~13,3\


(1 1/4-1 1/3):10= (1 3/12- 1 4/12) ;10= 1/12;10=1/120

6 2/9*(5-4 1/2 :9)= 6 2/9 x (5- 4/9)=6 2/9x 4 5/9=27,4


[(2 1/2)do potęgi 2 -3/4]:11= [6,25- 3/4] ;11=25/3=8 1/3