问题
解答题
|
答案
①375+450÷18×25,
=375+25×25,
=375+625,
=1000;
②24×(
+1 2
-1 3
),1 6
=24×
+24×1 2
-24×1 3
,1 6
=12+8-4,
=20-4,
=16;
③9.7÷1.25÷0.8,
=9.7÷(1.25×0.8),
=9.7÷1,
=9.7;
④
÷[4 5
×(5 7
-3 5
)],1 4
=
÷[4 5
×5 7
],7 20
=
÷4 5
,1 4
=
.16 5