问题
解答题
用递等式计算. (1)168.1÷(4.3×2-0.4) (2)
|
答案
(1)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)
×[4 9
-(3 4
-7 16
)],1 4
=
×[4 9
-3 4
],3 16
=
×4 9
,9 16
=
.1 4
用递等式计算. (1)168.1÷(4.3×2-0.4) (2)
|
(1)168.1÷(4.3×2-0.4),
=168.1÷(8.6-0.4),
=168.1÷8.2,
=20.5;
(2)
×[4 9
-(3 4
-7 16
)],1 4
=
×[4 9
-3 4
],3 16
=
×4 9
,9 16
=
.1 4