Question

Calculează:
a) 0,2+0,5-1/3=
b) 0,2-0,1(6)+0,5=
c) 0,25-1/7+0,2=
d) 0,5+1,4 · (2/3+1/6)=
e) 0,6 · (2/3)² :2/5=
Va rog rapid

Answer 1

a) 0,7+ 10/30= 7/10 + 10/30 = 21/10+10/30=31/30
b) 0,7 - 1 6/9 = 7/10 -15/9 = 63/90 - 15/90 = 48/30
c) 25/100- 1/7 + 2/10 = 1/4 - 1/7 + 2/10 = 35/140 - 20/140 + 70/140 = 85/140= 17/28
d) 5/10 + 1,4 • (4/6 + 1/6) = 5/10+14/10 • 5/6= 5/10+70/60 = 30/60+ 70/60 = 100/60 = 10/6
e) 0,6 • 4/9 • 5/2 = 6/10 • 20/18 = 120/180= 12/18