问题
解答题
计算,能简算的要简算
|
答案
(1)112-12×
,5 4
=112-15,
=97;
(2)(
+3 4
)×32,5 8
=
×32+3 4
×32,5 8
=24+20,
=44;
(3)25×
+9×9 16
,7 16
=25×
+7×9 16
,9 16
=(25+7)×
,9 16
=32×
,9 16
=18;
(4)
×5 4
×16,1 8
=
×(5 4
×16),1 8
=
×2,5 4
=
;5 2
(5)
+1 5
×2 9
,3 10
=
+1 5
,1 15
=
;4 15
(6)17×
,9 16
=(16+1)×
,9 16
=16×
+1×9 16
,9 16
=9+
,9 16
=9
.9 16