问题
解答题
简便计算 13.4-(3.4+0.33) 0.75×
|
答案
(1)13.4-(3.4+0.33),
=13.4-3.4-0.33,
=10-0.33,
=9.67;
(2)0.75×
+4 7
×10 7
.3 4
=0.75×
+4 7
×0.75,10 7
=0.75×(
+4 7
),10 7
=0.75×2,
=1.5.
简便计算 13.4-(3.4+0.33) 0.75×
|
(1)13.4-(3.4+0.33),
=13.4-3.4-0.33,
=10-0.33,
=9.67;
(2)0.75×
+4 7
×10 7
.3 4
=0.75×
+4 7
×0.75,10 7
=0.75×(
+4 7
),10 7
=0.75×2,
=1.5.