题目内容
判断.
3-2=1
( )
2+2=5
判断对错
3.75×2.1+7.9×3.75
=3.75×(2.1+7.9)
=3.75×10
=37.5
判断对错.
图中∠1=∠3,∠2=∠4.
3.75
=
(
(