问题
解答题
用递等式计算.
|
答案
(1)1000-4920÷24,
=1000-205,
=795;
(2)1.1×(20-19.3)+2.1,
=1.1×0.7+2.1,
=0.77+2.1,
=2.87;
(3)
÷[(1 3
+1 2
)×1 3
],3 5
=
÷[1 3
×5 6
],3 5
=
÷1 3
,1 2
=
.2 3
用递等式计算.
|
(1)1000-4920÷24,
=1000-205,
=795;
(2)1.1×(20-19.3)+2.1,
=1.1×0.7+2.1,
=0.77+2.1,
=2.87;
(3)
÷[(1 3
+1 2
)×1 3
],3 5
=
÷[1 3
×5 6
],3 5
=
÷1 3
,1 2
=
.2 3