102×0.57 36.3×7.2-16.3×7.2
12.5×32×0.25 6.8÷(0.5+0.3×4)
,
86+124= ×63=49
2﹣= 1÷×=
10﹣3.6= 8.32÷4=
0.25×0.25= 0.38×90+3.8=