问题
解答题
0.125×0.25×32 (
|
答案
(1)0.125×0.25×32,
=0.125×0.25×8×4,
=(0.125×8)×(0.25×4),
=1×1,
=1;
(2)(
+1 3
+1 4
)×48,1 5
=
×48+1 3
×48+1 4
×48,1 5
=16+12+9.6,
=37.6;
(3)
×7 4
+5 8
÷1 4
,8 5
=
×7 4
+5 8
×1 4
,5 8
=(
+7 4
)×1 4
,5 8
=2×
,5 8
=1.25.