5.9×9.9+0.59简算
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5.9×9.9+0.59
=5.9×9.9+0.59×1
=5.9×9.9+0.59×10×0.1
=5.9×9.9+5.9×0.1
=5.9×（9.9+0.1）
=5.9×10
=59
=5.9×9.9+0.59×1
=5.9×9.9+0.59×10×0.1
=5.9×9.9+5.9×0.1
=5.9×（9.9+0.1）
=5.9×10
=59
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展开全部
5.9×9.9+0.59
=5.9×9.9+5.9×0.1
=5.9×10
=59
=5.9×9.9+5.9×0.1
=5.9×10
=59
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