题目内容
计算下列各题,能简算的要简算.
| 23+45-310 | 118-(56+38) | 67- | 59+411+611+49. |
(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.
=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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