12.36×9.9+1.236用简便方法怎么做?
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12.36×9.9+1.236
=12.36X9.9+12.26X0.1
=12.36X(9.9+0.1)
=12.36X10
=123.6
=12.36X9.9+12.26X0.1
=12.36X(9.9+0.1)
=12.36X10
=123.6
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展开全部
12.36×9.9+1.236
=12.36×9.9+12.36×0.1
=12.36×(9.9+0.1)
=12.36×10
=123.6
=12.36×9.9+12.36×0.1
=12.36×(9.9+0.1)
=12.36×10
=123.6
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展开全部
12.36×9.9+1.236
=12.36×9.9+12.36×0.1
=12.36×(9.9+0.1)
=12.36×10
=123.6
=12.36×9.9+12.36×0.1
=12.36×(9.9+0.1)
=12.36×10
=123.6
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