① 小学一年级数学下册破十法，连减法，想加算减法怎么解释
破十法的计算举例：10-6=4；就是把10破开，直接分成4和6。6-6=0，所以10-6=4。当个位不够减时，就用10减去减数，剩下的数和个位上的数相加，即破十法。
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减法是四则运算之一,从一个数量中减去另一个数量的运算叫做减法。如：a-b-c
连减可以用简便运算计算，如a-b-c=a-(b+c)。
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拓展资料：
凑十法的计算举例：7+5=12；就是把数字变成10加起来更方便，把5分成3和2，7+3+2=12。凑十法是20以内进位加法的基本思路。运用凑十法能将20以内的进位加法转化为学生所熟悉的10加几的题目，从而化难为易。
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