卖西瓜
+ 1 ) = 40(张) 10
2÷(1- 1 − 1 ) = 2÷ 1 = 8(个)
2 4 4
8÷(1- 1 − 1 ) = 8÷ 1 = 32(个)
2 4 4
32÷(1- 1 − 1 ) = 32÷ 1 = 128(个)
2 4 4
共有 128 个西瓜
+ 1 ) = 40(张) 10
2÷(1- 1 − 1 ) = 2÷ 1 = 8(个)
2 4 4
8÷(1- 1 − 1 ) = 8÷ 1 = 32(个)
2 4 4
32÷(1- 1 − 1 ) = 32÷ 1 = 128(个)
2 4 4
共有 128 个西瓜