题目内容
判断对错
8+5=13
( )
判断对错。
(1)45÷5=8……5
( )
(2)54÷6<6
8.4+1.6÷0.4×2.5
=10÷0.4×2.5
=10÷1
=10
3.3
=
(
判断对错,把不对的改正过来。
1.2÷(0.25×0.4+0.5)
=1.2÷(1+0.5)
=1.2÷1.5
=0.8