问题
解答题
|
答案
(1)28×(310-150)÷32
=28×160÷32
=4480÷32
=140;
(2)(269+151)÷(145-75)
=420÷70
=6;
(3)150-20×5+25
=150-100+25
=50+25
=75.
|
(1)28×(310-150)÷32
=28×160÷32
=4480÷32
=140;
(2)(269+151)÷(145-75)
=420÷70
=6;
(3)150-20×5+25
=150-100+25
=50+25
=75.