Question

Efectuati folosind factorul comun:
a)53:61+53:39
b)79*137-79*37
c)37*23+37*54
d)89*45-28*89
e)115*63-115
f)47*18+27*47+31*47
g)25*31-25*16-8*25
h)74*49+49*12-49*55

primul raspuns corect primeste coronita!

Answer 1

a)53:(61+39)=
53:100=0,53
b)79×(137-37)=
79×100=7900
c)37×(23+54)=
37×77=2849
d)89×(45-28)=
89×17=1513
e) 115×(63-0)=
115×63=7245
f)47×(18+27+31)=
47×76=3572
g)25×(31-16-8)=
25×7=175
h)49×(74+12-55)=
49×31=1519