问题
解答题
递等式计算(能简算的要简算):9% (
|
答案
①(
-1 3
)×151 5
=
×15-1 3
×15,1 5
=5-3,
=2;
②(
+1 8
)×3 4 1 7
=
×7 8
,1 7
=
;1 8
③75×
+25×25%1 4
=(75+25)×25%,
=100×25%,
=25.
递等式计算(能简算的要简算):9% (
|
①(
-1 3
)×151 5
=
×15-1 3
×15,1 5
=5-3,
=2;
②(
+1 8
)×3 4 1 7
=
×7 8
,1 7
=
;1 8
③75×
+25×25%1 4
=(75+25)×25%,
=100×25%,
=25.