- 两位数乘两位数把一23看成28 两位数乘两位数怎么做 两位数乘两位数把一位数除掉 两位数乘两位数要使积是三位数 两位数乘两位数把一位数相加 两位数乘两位数把因数12看成14 两位数乘两位数把第二个乘数21 两位数乘两位数把因数16看成19 两位数乘11的速算方法 两位数乘两位数把21看成了27 两位数乘两位数,把一个乘数个位的8当成3,得345,实际应为420
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