买奖品
解法一:
1 × 3 = 3
2 4 8
3 3 1
1 − − =
解法二:
8 8 4
1
25÷ 4 = 100(元)
25÷[ ( 1 + 1 ÷2) - 3 ÷2]
2 4 4
= 25÷ 1
4
=100(元)
解法一:
1 × 3 = 3
2 4 8
3 3 1
1 − − =
解法二:
8 8 4
1
25÷ 4 = 100(元)
25÷[ ( 1 + 1 ÷2) - 3 ÷2]
2 4 4
= 25÷ 1
4
=100(元)