问题
解答题
|
答案
(1)(123+69)÷(25-17)
=192÷8
=24;
(2)[250-(43+132)]×18
=[250-175]×18
=75×18
=1350;
(3)1000-720÷8×9
=1000-90×9
=1000-810
=190.
|
(1)(123+69)÷(25-17)
=192÷8
=24;
(2)[250-(43+132)]×18
=[250-175]×18
=75×18
=1350;
(3)1000-720÷8×9
=1000-90×9
=1000-810
=190.