4+54×5 1×11+1 12÷33
2×43×3 10÷21×5 4÷42×2
×5=30 4×=16 3×=15
×2=12 ×=25 ×6=18
6×>46 60<9×
86-888-6 96-596-50
87-4078-40 78-2020+38
49+549-5 58-842+8
72+1895-15 50-(20+16)50-20+16 60-1538+8
1+55×1 78-(38-20)78-38-20 15+2560-20