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①(3618÷18-145)×20
②6÷ - ÷6
③(21+ )× +
④ ×[ ÷( - )]
⑤3.5×98+35×0.2
+ = - = 3- = + - + =
2÷3= +0.6= 0.32= 1- + =
进入组卷