问题
解答题
计算,能简算要简算
|
答案
(1)24×(
+1 4
-1 8
),1 6
=24×
+24×1 4
-24×1 8
,1 6
=6+3-4,
=9-4,
=5;
(2)
÷[(4 5
+1 3
)×2 5
],3 11
=
÷[4 5
×11 15
],3 11
=
÷4 5
,1 5
=4;
(3)375+450÷18×25,
=375+25×25,
=375+625,
=1000;
(4)2.5×1.25×32,
=2.5×1.25×(4×8),
=(2.5×4)×(1.25×8),
=10×10,
=100.