0.8*(3.2–2.99⼀2.3)简便计算

0.8*(3.2–2.99/2.3)简便计算
2025-05-17 00:07:09
推荐回答(1个)
回答1:

=0.8[3.2-(2.3+0.69)/2.3]
=0.8(3.2-1-0.3)
=0.8(2.2-0.2-0.1)
=0.8(2-0.1)
=0.8×2-0.8×0.1
=1.6-0.08
=1.52