
0.8乘888 + 555 ×0.7怎么简便计算?
1个回答
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0.8x888 + 555 ×0.7
=0.8x8x111+111x5x0.7
=(6.4+3.5)x111
=9.9x111
=(10-0.1)x111
=10x111-0.1x111
=1110-11.1
=1098.9
=0.8x8x111+111x5x0.7
=(6.4+3.5)x111
=9.9x111
=(10-0.1)x111
=10x111-0.1x111
=1110-11.1
=1098.9
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