4.2÷0.25×0.8
(0.09+1.29)÷0.23
50.4÷(5.6×2.5)
93÷0.31÷3
12.5×(0.78×0.8)
36.98×2.6+369.8×0.74
[78-(9.41+28.99)]-0.18
①0.175÷0.25×4
②1.19÷1.4-2.7×0.28
③102×0.45
④1.25×2.5×3.2
⑤5.4×3.2+3.2+3.2×3.6
⑥80-23.29-36.71
①+++
②(-+)×24
③1.5×+8.5×
④4×0.8×2.5×12.5
⑤25××40%×
⑥÷[(+)×]
①3.86+6.4+2.14+7.6
②5.2÷0.32﹣0.12
③()×15
④
⑤
⑥