问题
解答题
|
答案
(1)4-
×(6 5
+2 3
)3 2
=4-
×6 5 13 6
=4-13 5
=
;7 5
(2)
×4 15
×5 21 3 18
=
×4 63 3 18
=
;2 189
(3)3-
×1 7
+5 6 1 14
=3-
+5 42 1 14
=2
+37 42 1 14
=2
;20 21
(4)1÷
÷1 1000 1 100
=1×1000×100
=100000.