题目内容
| [简算] 473+245-173 | 327-175-125 | 698-(387+298) |
(1)473+245-173
=473-173+245
=300+245
=545;
(2)327-175-125
=327-(175+125)
=327-300
=27;
(3)698-(387+298)
=698-298-387
=400-387
=13.
=473-173+245
=300+245
=545;
(2)327-175-125
=327-(175+125)
=327-300
=27;
(3)698-(387+298)
=698-298-387
=400-387
=13.
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