问题
解答题
用简便方法计算,要写出简算过程. (1)1
(2)5.4-2
|
答案
(1)1
×100-11 11
,1 11
=1
×(100-1),1 11
=1
×99,1 11
=108;
(2)5.4-2
+2.6-0.375,5 8
=(5.4+2.6)-(2
+0.375),5 8
=8-3,
=5.
用简便方法计算,要写出简算过程. (1)1
(2)5.4-2
|
(1)1
×100-11 11
,1 11
=1
×(100-1),1 11
=1
×99,1 11
=108;
(2)5.4-2
+2.6-0.375,5 8
=(5.4+2.6)-(2
+0.375),5 8
=8-3,
=5.