12-0.24×6点5÷0.4简便计算?
3个回答
展开全部
=12-0.24×6.5÷0.4
=12-0.24×(6+0.5)÷0.4
=12-(0.24×6+0.24×0.5)÷0.4
=12-1.56÷0.4
=12-15.6÷4
=12-3.9
=12-3-0.9
=9-0.9
=8.1
=12-0.24×(6+0.5)÷0.4
=12-(0.24×6+0.24×0.5)÷0.4
=12-1.56÷0.4
=12-15.6÷4
=12-3.9
=12-3-0.9
=9-0.9
=8.1
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展开全部
12-0.24x6.5÷0.4
=12-0.24÷0.4x6.5
=12-0.6x6.5
=12-3.9
=8.1
=12-0.24÷0.4x6.5
=12-0.6x6.5
=12-3.9
=8.1
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