如题所述
72 × 98
= 72 × (100 - 2)
= 72 × 100 - 72 × 2
= 7200 - 144
= 7200 - 100 - 44
= 7100 - 44
= 7056
【俊狼猎英】团队为你解答
= 72 × (100 - 2)
= 72 × 100 - 72 × 2
= 7200 - 144
= 7200 - 100 - 44
= 7100 - 44
= 7056
【俊狼猎英】团队为你解答
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