9.9×26简便计算

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9.9×26简便计算
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9.9×26简便计算
9.9×26简便计算

9.9×26简便计算

9.9×26
=(10-0.1)×26
=10×26-0.1×26
=260-2.6
=257.4

9.9x26
=(10-0.1)x26
=10x26-0.1x26
=260-2.6
=257.4

9.9x26
=(10-0.1)x26
=10x26-0.1x26
=260-2.6
=257.4
望采纳,谢谢