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简便计算 536-198 0.75×5.3+4.7×0.75 134-56+14-16.

编辑:chaxungu时间:2026-04-27 13:18:17分类:小学数学题库

简便计算
536-1980.75×5.3+4.7×0.751
3
4
-
5
6
+
1
4
-
1
6
.
(1)536-198
=536-(200-2),
=536-200+2,
=336+2,
=338;

(2)0.75×5.3+4.7×0.75
=(5.3+4.7)×0.75,
=10×0.75,
=7.5;

(3)1
3
4
-
5
6
+
1
4
-
1
6

=1
3
4
+
1
4
-(
5
6
+
1
6
),
=2-1,
=1.