问题
解答题
|
答案
(1)270÷45×32
=6×32
=192;
(2)8×
+1 12
÷42 5
=
+2 3
×2 5 1 4
=
+2 3 1 10
=
;23 30
(3)1÷(
-13 4
÷1 4
)3 5
=1÷(
-13 4
×1 4
)5 3
=1÷(
-13 4
)5 12
=1×6 17
=
;6 17
(4)1.75×0.8+9.2×1.75
=(0.8+9.2)×1.75
=10×1.75
=17.5.