Question

1,8-0,6).
Calculati:
a) 31–8,2-0,3 ; b) (2,41' –5,6:14; c) 1,3° -0,23* +4,31;
(4-0,25). 2018; e) 13-14,25 n102-04)
2
a)​

Answer 1

Răspuns:

a) 3 1/2–8,2×0,3=

=(3×2+1)/2-=7/2-2,46=

=3,5-2 46=1,04

b) (2,4)² –5,6:1,4=5,76-4=1,76

5,6÷1,4=56÷14=4

c) 1,3² -0,2³×5²+4-31=

=1,69-0,2×25+4,31

=1,69-5+4,31=

=1,69+4,31-5=

=6-5=

=1

d) (1/4-0.25)×2018=

=(0,25-0,25)×2018=

=0×2018=

=0

e) 13 2/5 - 11,2÷9 1/3=

=(13×5+2)/5-11,2÷(9×3+1)/3=

=67/5-11,2÷28/3=

=13,4÷9,33=

=1,200=

=1,2

f. 3/4÷(0,8-0.65)=

=0,75-0,15=

=0,60=

=0,6