问题
解答题
|
答案
①100.4-9+0.77÷1.1,
=100.4-9+0.7,
=91.4+0.7,
=92.1;
②98.7×0.9+98.7,
=98.7×(0.9+1),
=187.53;
③
÷[(8 9
+2 5
)×1 10
]3 4
=
÷[(8 9
+4 10
)×1 10
]3 4
=
÷8 9
,3 8
=
;64 27
④12-
×7-3 5
×3,3 5
=12-
×(7-3),3 5
=12-2.4,
=9.6;