17.5-2.3x3.4简便计算?
16个回答
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原式=3.5×5-2.3×(3.5-0.1)
=3.5×5-2.3×3.5+2.3×0.1
=3.5×(5-2.3)+0.23
=3.5×2.7+0.23
=9.45+0.23
=9.68
=3.5×5-2.3×3.5+2.3×0.1
=3.5×(5-2.3)+0.23
=3.5×2.7+0.23
=9.45+0.23
=9.68
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=3.5×5-2.3×3.5+2.3×0.1
=3.5×(5-2.3)+2.3×0.1
=3.5×2.7+2.3×0.1
=2.3×3.5+3.5×0.4+2.3×0.1
=2.3×3.6+3.5×0.4
=0.4×20.7+0.4×3.5
=0.4×24.2
=9.68
=3.5×(5-2.3)+2.3×0.1
=3.5×2.7+2.3×0.1
=2.3×3.5+3.5×0.4+2.3×0.1
=2.3×3.6+3.5×0.4
=0.4×20.7+0.4×3.5
=0.4×24.2
=9.68
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17.5-2.3×3.4
=17.5-7.82
=9.68
=17.5-7.82
=9.68
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17.5-2.3×3.4
=17.5一2.3×3一2.3×0.4
=17.5-6.9-0.92
=10.6一0.92
=9.68
=17.5一2.3×3一2.3×0.4
=17.5-6.9-0.92
=10.6一0.92
=9.68
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17.5-2.3×3.4
=17.5-7.82
=9.58
=17.5-7.82
=9.58
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