7.8×0.61十0·78x7·5一0·078x36的简便计算

7.8×0.61十0·78x7·5一0·078x36的简便计算

7.8×0.61+0.78x7·5一0.078x36
=7.8x(0.61+0.1x7.5-0.01x36)
=7.8x(0.61+0.75-0.36)
=7.8x1
=7.8
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第1个回答  2018-06-02
7.8×0.61十0·78x7·5一0·078x36
=7.8x0.61+7.8x0.75-7.8x0.36
=7.8x(0.61+0.75-0.36)
=7.8x1
=7.8
第2个回答  2018-06-02
7.8×0.61十0·78x7·5一0·078x36
=7.8×(0.61+0.75-0.36)
=7.8×1
=7.8