7.2×0.5+0.8×0.3怎么简便计算?
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7.2×0.5+0.8×0.3怎么简便计算?
7.2×0.5+0.8×0.3
=0.24x3x5+0.24
=0.24x(15+1)
=0.24x16
=3.84
7.2×0.5+0.8×0.3
=0.24x3x5+0.24
=0.24x(15+1)
=0.24x16
=3.84
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7.2x0.5十0.8x0.3
=7.2x0.3十7.2x0.2十0.8x0.3
=(7.2十0.8)x0.3十7.2x0.2
=8x0.3十1.44
=2.4+1.44
=3.84
=7.2x0.3十7.2x0.2十0.8x0.3
=(7.2十0.8)x0.3十7.2x0.2
=8x0.3十1.44
=2.4+1.44
=3.84
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7.2x0.5+0.8╳0.3
=7.2x(0.3+0.2)+0.8X0.3
=7.2Ⅹ0.3+7.2╳0.2+0.8X0.3
=(7.2+0.8)x0.3+7.2X0.2
=8X0.3+1.44
=2.4+1.44
=3.84
=7.2x(0.3+0.2)+0.8X0.3
=7.2Ⅹ0.3+7.2╳0.2+0.8X0.3
=(7.2+0.8)x0.3+7.2X0.2
=8X0.3+1.44
=2.4+1.44
=3.84
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7.2×0.5+0.8×0.3
=7.2/2+0.24
=3.6+0.24
=3.84
=7.2/2+0.24
=3.6+0.24
=3.84
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