问题
解答题
(
999
|
答案
(1)(
+5 8
)×8+2 27
,11 27
=
×8+5 8
×8+2 27
,11 27
=5+1,
=6;
(2)
÷[1 2
×(2 3
+1 6
)],1 3
=
÷[1 2
×2 3
+1 6
×2 3
],1 3
=
÷1 2
,1 3
=
×3,1 2
=1
;1 2
(3)
×2.5×3+0.8 16×1.5+0.9
-9 11
,7 33
=
×25×3+8 16×15+9
-9 11
,7 33
=
×1 3
-9 11
,7 33
=
-3 11
,7 33
=
;2 33
(4)999
+998 9
+98 9
+8 9
,1 3
=999+99+9+
×3+8 9
,1 3
=999+99+9+3,
=(999+1)+(99+1)+(9+1),
=1000+100+10,
=1110.