2﹣÷﹣ 8.1÷(5﹣0.005×700×1)
〔1.8﹣1.8×(1.8﹣1.8)〕÷0.36 〔5﹣1.7÷(2﹣1)〕×1
51÷+71÷+91÷
6÷〔35×(+)〕×4.8 1+3+5+7+9.
(1)= (2)=
(3)= (4)9999+99992=
(5)11×12×13﹣12×13﹣260= (6)101×99×999+999=
(7)= (8)1880×199.9﹣1999×187.9=
试题篮
()