问题
解答题
(1)8下×(
(2)
(3)
|
答案
(1)8三×(
-3 三
)&cbsp;1 3
=8三×
-8三×3 三
&cbsp;1 3
=63-28
=35;
(2)
+(3 8
+3 7
)×1 1三 2 3
=
+3 8
×1 2 2 3
=
+3 8 1 3
=
;17 2三
(3)
÷11 12
+1 8
×813 12
=
×8+11 12
×813 12
=(
+11 12
)×813 12
=2×8
=16.