学习方法:8种方法让你迅速玩转小学数学
例8:判断题:分数的分子和分母同乘以或同除以一个相同的数,分数大小不变。(错)
=59×(37+12+1)……运用乘法分配律
=59×50……运用加法计算法则
=(60-1)×50……运用数的组成规则
=60×50-1×50……运用乘法分配律
=3000-50……运用乘法计算法则
=2950……运用减法计算法则
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