问题
解答题
|
答案
(1)
×3 4
+3 4
×0.75-75%,1 4
=
×3 4
+3 4
×1 4
-3 4
,3 4
=
×(3 4
+3 4
-1),1 4
=
×0,3 4
=0.
(2)[1-(0.25+0.375)]÷0.25.
=[1-0.625]÷0.25,
=0.375÷0.25,
=1.5.
|
(1)
×3 4
+3 4
×0.75-75%,1 4
=
×3 4
+3 4
×1 4
-3 4
,3 4
=
×(3 4
+3 4
-1),1 4
=
×0,3 4
=0.
(2)[1-(0.25+0.375)]÷0.25.
=[1-0.625]÷0.25,
=0.375÷0.25,
=1.5.