问题
解答题
(1)(0.125×8-0.5)×4. (2)
|
答案
(1)(0.125×8-0.5)×4,
=(1-0.5)×4,
=0.5×4,
=2;
(2)
÷6+9 20
×1 6
,1 20
=
×9 20
+1 6
×1 6
,1 20
=
×(1 6
+9 20
),1 20
=
×1 6
,1 2
=
;1 12
(3)
×0.25+5 6
×1 4
,1 6
=0.25×(
+5 6
),1 6
=0.25×1,
=0.25;
(4)28×
,5 29
=(29-1)×
,5 29
=29×
-1×5 29
,5 29
=5-
,5 29
=4
.24 29