问题
解答题
|
答案
(1)
+11 12
+5 8
+3 8
,1 12
=(
+11 12
)+(1 12
+5 8
),3 8
=1+1,
=2;
(2)3.25×27+73×3.25,
=3.25×(27+73),
=3.25×100,
=325;
(3))
-7 9
+1 8
-2 9
,3 8
=(
+7 9
)-(2 9
+1 8
),3 8
=1-
,1 2
=
.1 2