问题
解答题
计算,能简算的要简算.
|
答案
(1)(
-3 4
)÷1 8 5 12
=
÷5 8 5 12
=
;3 2
(2)
÷7+8 13
×1 7 5 13
=
×8 13
+1 7
×1 7 5 13
=(
+8 13
)×5 13 1 7
=1×1 7
=
;1 7
(3)6÷(
+3 5
)1 10
=6÷7 10
=
;60 7
(4)47×9 48
=(48-1)×9 48
=48×
-1×9 48 9 48
=9-9 48
=8
;13 16
(5)
×11-2 3
×22 3
=
×(11-2)2 3
=
×92 3
=6;
(6)
÷9+6 25
×6 25 8 9
=
×6 25
+1 9
×6 25 8 9
=
×(6 25
+1 9
)8 9
=
×16 25
=
.6 25