问题
解答题
脱式计算(能简算的要简算)
|
答案
(1)70.9-48.32÷1.6,
=70.9-30.2,
=40.7;
(2)(
-1 9
)×36,1 12
=
×36-1 9
×36,1 12
=4-3,
=1;
(3)
÷[(4 25
+2 5
)×1 3
],9 11
=
÷[4 25
×11 15
],9 11
=
÷4 25
,3 5
=
;4 15
(4)
×23+16×4 7
+1 7
×60,1 7
=
×92+16×1 7
+1 7
×60,1 7
=
×(92+16+60),1 7
=
×168,1 7
=24.