问题
解答题
|
答案
(1)
+1 5
×4 5 2 7
=
+1 5 8 35
=
;3 7
(2)16×2.5×5 2
=40×5 2
=100;
(3)(
-1 2
+1 5
)×605 12
=
×60-1 2
×60+1 5
×605 12
=30-12+25
=43.
|
(1)
+1 5
×4 5 2 7
=
+1 5 8 35
=
;3 7
(2)16×2.5×5 2
=40×5 2
=100;
(3)(
-1 2
+1 5
)×605 12
=
×60-1 2
×60+1 5
×605 12
=30-12+25
=43.