2.84×9.6+0.96×7.6的简便方法？
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2.84×9.6+0.96×7.6
=2.84×9.6+0.96×10×7.6÷10
=2.84×9.6+9.6×0.76
=9.6×(2.84+0.76)
=9.6×3.6
=9.6×(4-0.4)
=9.6×4-9.6×0.4
=38.4-3.84
=34.56
=2.84×9.6+0.96×10×7.6÷10
=2.84×9.6+9.6×0.76
=9.6×(2.84+0.76)
=9.6×3.6
=9.6×(4-0.4)
=9.6×4-9.6×0.4
=38.4-3.84
=34.56
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