A-A+
用你喜欢的方法计算下面各题.14+38-1234-56+14910-58-1858-(12-
问题详情
参考答案
(1)14+38-12,
=28+38-48,
=18;
(2)34-56+14,
=34+14-56,
=1-56,
=16;
(3)910-58-18,
=910-(58+18),
=910-34,
=1820-1520,
=320;
(4)58-(12-14),
=58-14,
=38;
(5)23+311-23,
=23-23+311,
=311;
(6)13+47+23+17,
=(13+23)+(47+17),
=1+57,
=157;
(7)56+(16-15),
=56+16-15,
=1-15,
=45;
(8)2325-29+225-59,
=(2325+225)-(29+59),
=1-1,
=0.
考点:方法