问题
解答题
用简便方法计算.
(
0.125×25×32. |
答案
(1)
×4+5 6
×2,5 6
=
×(4+2),5 6
=
×6,5 6
=5;
(2)(
-1 3
+1 6
)×12,1 4
=
×12-1 3
×12+1 6
×12,1 4
=4-2+3,
=5;
(3)0.125×25×32,
=0.125×25×4×8,
=(0.125×8)×(25×4),
=1×100,
=100.