扣除; 减法;
subtraction的复数;
BCD number conversion realizes the conversion from binary system to decimal system by consecutive subtractions.
十进制转换模块采用了连减法,实现了二进制数向十进制数的转换;
Can we use the tricks in subtractions? Let's look at example 3.
、师:在减法中能不能用简便算法 呢 ?试一试.
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