2.6×26.2-6.2×0.9简便方法?
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2.6×26.2-6.2×0.9
=2.6×(20+6.2)-6.2×0.9
=2.6×20+2.6×6.2-6.2×0.9
=26×2+6.2×(2.6-0.9)
=52+6.2×1.7
=52+10.54
=62.54
=2.6×(20+6.2)-6.2×0.9
=2.6×20+2.6×6.2-6.2×0.9
=26×2+6.2×(2.6-0.9)
=52+6.2×1.7
=52+10.54
=62.54
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展开全部
2.6×26.2-6.2×0.9
=2.6×(20+6.2)-6.2×0.9
=2.6×20+6.2×(2.6-0.9)
=52+6.2×1.7
=52+6.2×(2-0.3)
=52+12.4-1.86
=62.54
=2.6×(20+6.2)-6.2×0.9
=2.6×20+6.2×(2.6-0.9)
=52+6.2×1.7
=52+6.2×(2-0.3)
=52+12.4-1.86
=62.54
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