问题 解答题
计算下列各题,能简算的要简算.
23+45-310118-(56+38)67-59+411+611+49.
答案

(1)23+45-310,

=68-310,

=-242;

(2)118-(56+38),

=118-94,

=24;

(3)67-,

=67-1102,

=-1035;

(4)59+411+611+49,

=(59+411)+(611+49),

=470+660,

=1130.

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