问题
解答题
用简便方法计算 ①0.58+
②11-
|
答案
①0.58+
+1.12+5 13
,8 13
=(0.58+1.12)+(
+5 13
),8 13
=1.7+1,
=2.7;
②11-
-4 11
,7 11
=11-(
+4 11
),7 11
=11-1,
=10.
用简便方法计算 ①0.58+
②11-
|
①0.58+
+1.12+5 13
,8 13
=(0.58+1.12)+(
+5 13
),8 13
=1.7+1,
=2.7;
②11-
-4 11
,7 11
=11-(
+4 11
),7 11
=11-1,
=10.