Question

6. Calculaţi: a) 0,5-1,5+3,7:1,85+0,05:0,01; b) 30,6.1,8-15:1,2+0,5:0,12; c) (0,2 + 2,8)2-0,04-7,84+10,21; d) 5,55-22,2+3,2:0,16-0,169:0,13; e) 14,4:00,12 1,2)+5,29:(2,3.23)-0,625:(2,5-0,52);
Ajutor dau coroana ​

Answer 1

Explicație pas cu pas:

a) 0,5-1,5+3,7:1,85+0,05:0,01=

-1+370/185+5/1=4+2=6

b) 30,6.1,8-15:1,2+0,5:0,12=

55,08-12,5+25/6=42,58+4,16=46,74

c) (0,2 + 2,8)2-0,04-7,84+10,21=

3×2-7,88+10,21=6-7,88+10,21=

-1,88+10,21=8,33

d) 5,55-22,2+3,2:0,16-0,169:0,13=

-16,65+20-1,3=3,35-1,3=2,05

e) 14,4:00,12 1,2)+5,29:(2,3.23)-0,625:(2,5-0,52)=

este cam neclar