问题
解答题
计算下面各题(能简便计算的要简便计算). (1)12×(124-85)÷26 (2)5.5×17.3+6.7×5.5 (3)
(4)1-
|
答案
(1)12×(124-85)÷26
=12×39÷26,
=468÷26,
=18;
(2)5.5×17.3+6.7×5.5
=(17.3+6.7)×5.5,
=24×5.5,
=132;
(3)
+7 13
+5 6
+6 13 1 6
=(
+7 13
)+(6 13
+5 6
),1 6
=1+1,
=2;
(4)1-
÷3 13
-9 26 1 5
=1-
-2 3
,1 5
=
-1 3
,1 5
=
.2 15