Question

Działania:

a) 3,73-(3,3 * 2 1/10- 2 1/2* 0,1)

b) [-5 3/4: 0,1+ 1,4* (-1/5)]: (-0,2)

c) 0,076: (-0,01)* (-2)- 3/4* 2,2+ 0,24:(-0,6)

d) -4/5* 0,15- 2/9* (-0,9)- 4/15* 1.2

*- znak mnożenia

/- kreska ułamkowa

Answer 1

a) 3,73-(3,3 * 2 1/10- 2 1/2* 0,1)=

3.73-(33/10*21/10-5/2*1/10)=

3.73-(693/100-5/20)=

3.73-(6.93-25/100)=

3.73-6.93+0.25=

=-2.95

b) [-5 3/4: 0,1+ 1,4* (-1/5)]: (-0,2)=

(-23/4*10-14/10*1/5)*(-10/2)=

(-115/2-14/50)*(-5)=

(-5750/100-28/100)*(-5)=

-5778/100*(-5)=

5778/20=288 i 18/20=288 i 90/100=288.9

c) 0,076: (-0,01)* (-2)- 3/4* 2,2+ 0,24:(-0,6)

15.2-3/4*22/10+24/100*(-10/6)=

15.2-33/20-4/10=15.2-1.65-0.4=13.15

d) -4/5* 0,15- 2/9* (-0,9)- 4/15* 1.2=

-4/5*15/100-2/9*(-9/10)-4/15*12/10=

-3/25+2/10-24/75=

-18/150+30/150-48/150=

-36/150=-12/50=-24/100=-0.24