(1)两个数整数相加和是8的算式有5个。即:
0➕8=8,1➕7=8,2➕6=8,3➕5=8,
4➕4=8
(2)两个小数相加和是8的算式一共有无数个。即0.2➕7.8=8,0.02➕7.98=8
0.0002➕7.9998=8,……
(3)两个分数相加和是8的算式一共有无数个。即5又1/2➕2又1/2=8
5又1/3➕2又2/3=8,……
(1)两个数整数相加和是8的算式有5个。即:
0➕8=8,1➕7=8,2➕6=8,3➕5=8,
4➕4=8
(2)两个小数相加和是8的算式一共有无数个。即0.2➕7.8=8,0.02➕7.98=8
0.0002➕7.9998=8,……
(3)两个分数相加和是8的算式一共有无数个。即5又1/2➕2又1/2=8
5又1/3➕2又2/3=8,……