Răspuns:
a) 10200:100-18=102-18=84
30000:100-18=300-18=282
1800:100-18=18-18=0
b)(72000:1000):18=72:18=3
(18000:1000):18=18:18=1
(108000:1000):18=108:18=6
c)(1050:10)x18=105x18=1890
(1800:10)x18=180x18=3240
(47000:10)x18=4700x18=84600
d)1000:5+18=200+18=218
50005:5+18=10001+18=10019
2350:5+18=470+18=488
Explicație pas cu pas: