如题所述
第1个回答 2013-11-04
(6)78.6*990+78.6/0.1
=78.6*(990+10)
=78.6*1000
=78600
(8)2.8*23.4+11.1*57.6+6.54*28
=2.8*(23.4+65.4)+11.1*57.6
=2.8*88.8+11.1*57.6
=2.8*88.8+11.1*8*7.2
=2.8*88.8+88.8*7.2
=88.8*(2.8+7.2)
=88.8*10
=888
=78.6*(990+10)
=78.6*1000
=78600
(8)2.8*23.4+11.1*57.6+6.54*28
=2.8*(23.4+65.4)+11.1*57.6
=2.8*88.8+11.1*57.6
=2.8*88.8+11.1*8*7.2
=2.8*88.8+88.8*7.2
=88.8*(2.8+7.2)
=88.8*10
=888
第2个回答 2013-10-31
6题=7081.86.
8题=1110
8题=1110
第3个回答 2013-10-31
追答
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