⑴
⑵0.5×0.04=
⑶70.1÷100=
⑷
2.5×1.25×32
8.6×6.8+8.6×3.2
24×1.2÷0.5
15.4÷0.8-1.25
2.4×3÷1.8
96÷(15.4-12.2)