
298+88*18_558简便方法?
1个回答
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计算如下:
298+88*18-558
=298+88×2×9-558
=298+176×9-558
=298+1760-176-558
=300+1760-176-558-2
=2060-176-560
=2060-560-176
=1500-176
=1500-200+24
=1300+24
=1324
298+88*18-558
=298+88×2×9-558
=298+176×9-558
=298+1760-176-558
=300+1760-176-558-2
=2060-176-560
=2060-560-176
=1500-176
=1500-200+24
=1300+24
=1324
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