Răspuns:
(12+8):2= 20 : 2= 10 sau 12 :2+ 8:2=6+4=10
(16+4):4= 20: 4=5 sau 16:4+ 4:4= 4+1= 5
(24 +4):2 =28:2 =14 sau 24:2+ 4:2= 12+2= 14
(23+13):6=36 :6=6 sau 24:6+12:6= 4+2= 6
(40-6):6=36:6=6
(32+24):8=56:8=7 sau 32:8+ 24:8= 4+3= 7
(15+25+10):5=50:5=10 sau 15:5+ 25:5+ 10:5= 3+5+2=10
(20-18+14):2=16: 2=8 sau 20:2- 18:2 + 14:2= 10 -9 +7= 1+7=8
(46-4):7=42 :7=6
(16-4):2=12:2= 6 sau 16:2 - 4:2= 8- 2= 6
