23.32+5.84+6.68 80.6-(12.8-3.9)
50×186×2 132×[275÷(17+38)]
9.41+3.14-1.41 105×72-5×72
5.26+7+1.74 27.85-(7.85+3.9)
5.6+2.7-3.6 10-2.75-3.25
15.25-3.1+0.65-4.9