问题
解答题
能简算的要简算. (1)(12.5×8-40)÷0.6 (2)6
|
答案
(1)(12.5×8-40)÷0.6,
=(100-40)÷0.6,
=60÷0.6,
=100;
(2)6
-(21 3
-15 9
),2 3
=6
-21 3
+15 9
,2 3
=6
+11 3
-22 3
,5 9
=8-2
,5 9
=5
.4 9
能简算的要简算. (1)(12.5×8-40)÷0.6 (2)6
|
(1)(12.5×8-40)÷0.6,
=(100-40)÷0.6,
=60÷0.6,
=100;
(2)6
-(21 3
-15 9
),2 3
=6
-21 3
+15 9
,2 3
=6
+11 3
-22 3
,5 9
=8-2
,5 9
=5
.4 9