问题
解答题
计算.
|
答案
(1)5400-2940÷28×27 =5400-105×27, =5400-2835, =2565; | |||||||||||||||||||||
(2)(20.2×0.4+7.88)÷4.2 =(8.08+7.88)÷4.2, =15.96÷4.2, =3.8; (3)( = = =1 |
8 |
3 |
5 |
13 |
5 |
26 |
2 |
5 |
=10÷[
-(2+8 3
)],2 5
=10÷[
-8 3
],12 5
=10÷
,4 15
=37
.1 2