题目内容
判断对错
4+5=10
( )
8.4+1.6÷0.4×2.5
=10÷0.4×2.5
=10÷1
=10
5元3角-4元=1元3角
( )
判断对错.
如果a×b=c,下面的正确算式是
(1) a=b×c
(2) a=c÷b
(3) b=c÷a
(4) a=c-b
(5) a=c+b
(6) b=c-a
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