①480÷[18.8-(10.5+0.3)]
②125×88
③360÷25÷4
④17.8-(19-3.2)
⑤102×36-72
⑥12-1.56-0.44
15.8×69.3-68.3×15.8
1.25×4×2.5×8
1.2×2.5+0.8×2.5
1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)
①4.85×1.25×8
②76.8-27.24-12.76
③0.37×7.4+9.63×7.4