题目内容
判断对错
7+5=13
( )
把105分解质因数是105=1×3×5×7.
0.5+0.5×(0.3+0.7)=0.5+0.5=1
7.08×1.5+7.5×7.08
=7.08×(1.5+7.5)
=7.08×10
=70.8
3.75
=
(