17×![]() | ( + )×150 | × + ×![]() |
× ×64 | + ×![]() | 44-72× . |
17×![]() |
,=16×
-
=
;(
+
)×150=
×150+
×150=24+16,
=40;
×
+
×
,=
×(
+
),=
×
,=

×
×64,=
×(
×64),=
×8,=10;
+
×
,=
×(1+
),=
×
,=
;44-72×
,=44-30,
=14.
分析:(1)(2)(3)(4)(5)利用乘法分配律解答;
(6)先算乘法再算减法;
据此解答即可.
点评:此题考查了分数的加减乘除运算,根据规律,能简算的要简算.