问题
解答题
|
答案
(1)60+40×3,
=60+120,
=180;
(2)75-75÷5,
=75-15,
=60;
(3)720÷8×9,
=90×9,
=810;
(4)19×(100-78),
=19×22,
=418;
(5)(86+54)÷28,
=140÷28,
=5;
(6)207-(47-29),
=207-18,
=189.
|
(1)60+40×3,
=60+120,
=180;
(2)75-75÷5,
=75-15,
=60;
(3)720÷8×9,
=90×9,
=810;
(4)19×(100-78),
=19×22,
=418;
(5)(86+54)÷28,
=140÷28,
=5;
(6)207-(47-29),
=207-18,
=189.