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÷ × ÷ + × ÷( + )×
15÷ 15× 48×( + )48× +
+ = ×6= - = ÷ =
× = ÷11= × = ÷ =
÷5= 12÷ = ×32= × =
× = ÷ = - = + =
① +( - )÷
②(16× )×( × )
③ ×[9÷( ÷9)]
④ ÷ ÷
⑤( + - )×24
⑥23× +76÷5+
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