Răspuns:
1. 2,4•4,2-3,2:4/5=6,08
2,4•4,2-3,2•5/4=6,08
2,4•4,2-3,2•1,25=6,08
10,08-4=6,08
2. 25,41-3•(1,2+0,7)=19,71
25,41-3•1,9=19,71
25,41-5,7=19,71
3. 18,16-12,3:2,5=2,344 F
a. 18,16-12,3:2,5=13,24
18,16-4,92=13,24
Enunțul este fals.
b. (18,16-12,3):2,5=2,344
5,86:2,5=2,344