把11.22.33.44.55.66.77.88这八个数相减。等于11.22.33.44.每个数这用一次。

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88-44=44.55-22=33.33-11=22.77-66=11.易，

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88-44=44 66-33=33 77-55=22 22-11=11

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44-22=22 55-11=44 66-33=33 88-77=11

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小学二年级的题吧
22-11=44-33=66-55=88-77

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