6点2×1点5×0点8怎样简便运算
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可以先算后面的,这样小数位少一点
6.2×1.5×0.8
=6.2×(1.5×0.8)
=6.2×1.2
=7.44
6.2×1.5×0.8
=6.2×(1.5×0.8)
=6.2×1.2
=7.44
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6.2x1.5x0.8
=6.2×(1+0.5)×0.8
=6.2×(1×0.8+0.5×0.8)
=6.2×(0.8+0.4)
=6.2×1.2
=6.2×(1+0.2)
=6.2×1+6.2×0.2
=6.2+1.24
=7.44
=6.2×(1+0.5)×0.8
=6.2×(1×0.8+0.5×0.8)
=6.2×(0.8+0.4)
=6.2×1.2
=6.2×(1+0.2)
=6.2×1+6.2×0.2
=6.2+1.24
=7.44
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答:6.2×1.5×0.8=(6+0.2)×(0.3×(5×0.2)x4)=(6+0.2)×1.2=6×1.2+0.2×1.2=7.2+0.24=7.44
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6.2×1.5×0.8=6.2×(1.5×0.8)=6.2×1.2=7.44。
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6.2×1.5×0.8
=6.2×(1.5×2)×0.4
=6.2×3×0.4
=18.6×0.4
=7.44
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=6.2×(1.5×2)×0.4
=6.2×3×0.4
=18.6×0.4
=7.44
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6点2×1点5×0点8怎样简便运算?
6.2×1.5×0.8
=6.2×(1.5×0.8)
=6.2×1.2
=(6+0.2)×1.2
=6×1.2+0.2×1.2
=7.2+2.4
=7.44
6.2×1.5×0.8
=6.2×(1.5×0.8)
=6.2×1.2
=(6+0.2)×1.2
=6×1.2+0.2×1.2
=7.2+2.4
=7.44
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