①(3.2+1.2)÷0.8
②3.6÷0.4-1.2×5
③18÷(3.6-1.8)
④29÷(0.8×25)
14.4×0.8×1.25 2.3÷0.46-3.5
①
②
③
④
⑤
⑥
①9.74÷2.5÷0.4
②56.7÷0.5×0.4
③84.6-4.2÷0.25
④9.36÷(1.37-0.89)
⑤40.5÷0.5+10.75
⑥45.6÷6÷0.5