五年级用简便方法计算80.64⼀25.6-25.6 快快快啊

2024-12-26 03:54:31
推荐回答(1个)
回答1:

80.64÷25.6-25.6
=80.64÷(8×3.2)-25.6
=80.64÷8÷3.2-25.6
=10.08÷3.2-25.6
=3.15-25.6
=-22.45