(1)61×1/17−1÷17×47+20÷17= (2)888×9-111×22= (3)99999×7+11111×37= (4)2÷4/9−4/9÷2= (5)18÷18/23−18/23÷18=

问题描述:

(1)61×

1
17
−1÷17×47+20÷17=
(2)888×9-111×22=
(3)99999×7+11111×37=
(4)
4
9
4
9
÷2
=
(5)18÷
18
23
18
23
÷18
=

(1)61×117−1÷17×47+20÷17,=(61-47+20)×117,=34×117,=2;(2)888×9-111×22,=111×72-111×22,=111×(72-22),=111×50,=5550;(3)99999×7+11111×37,=11111×63+11111×37,=11111×(63+3...