和差倍问题公式

和倍问题就是已知两数的和与两数的倍数的关系，求这两个数各是多少的应用题。
小数＝和÷（倍数＋1）（一般用小数作标准量）
大数＝和－小数 或 大数＝小数×倍数
等量关系：小数＋小数×倍数＝和

差倍问题就是已知两个数的差与两个数的倍数关系，求这两个数是多少的应用题。
小数＝差÷（倍数－1）
大数＝小数＋差 或 大数＝小数×倍数
等量关系：小数×倍数－小数＝差

和倍问题是已知两数的和与两数的倍数关系。
小数=和÷(倍数+1）
大数=和—小数

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