脱式计算.(能简算得要简算,并写出主要过程)3637×36 ...

脱式计算.(能简算得要简算,并写出主要过程)3637×36 1312÷(1312+2)(111+999)÷[56×(37-38)].

(1)
36
37
×36
=
36
37
×(37-1)
=
36
37
×37-
36
37

=36-
36
37

=35
1
37


(2)
13
12
÷(
13
12
+2)
=
13
12
÷
37
12

=
13
12
×
12
37

=
13
37


(3)(111+999)÷[56×(
3
7
-
3
8
)]
=1110÷[56×
3
7
-56×
3
8
]
=1110÷[24-21]
=1110÷3
=370.
温馨提示:答案为网友推荐,仅供参考
相似回答