问题
解答题
|
答案
①58-16÷
,4 5
=58-20,
=38;
②
-2 9
×6 15
,2 9
=(1-
)×6 15
,2 9
=
×9 15
,2 9
=
;2 15
③62.5÷2.5÷4,
=62.5÷(2.5×4),
=62.5÷10,
=6.25;
④8160÷24-36×2.5,
=340-90,
=250;
⑤36×(
+5 6
-1 12
),1 3
=36×
+36×5 6
-36×1 12
,1 3
=30+3-12,
=21;
⑥3.5÷[1-(0.4+
)],1 4
=3.5÷[1-0.65],
=3.5÷0.35,
=10.