① 小學一年級數學下冊破十法，連減法，想加算減法怎麼解釋
破十法的計算舉例：10-6=4；就是把10破開，直接分成4和6。6-6=0，所以10-6=4。當個位不夠減時，就用10減去減數，剩下的數和個位上的數相加，即破十法。
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減法是四則運算之一,從一個數量中減去另一個數量的運算叫做減法。如：a-b-c
連減可以用簡便運算計算，如a-b-c=a-(b+c)。
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拓展資料：
湊十法的計算舉例：7+5=12；就是把數字變成10加起來更方便，把5分成3和2，7+3+2=12。湊十法是20以內進位加法的基本思路。運用湊十法能將20以內的進位加法轉化為學生所熟悉的10加幾的題目，從而化難為易。
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