问题
解答题
计算下面各题,能用简便方法计算的要用简便方法计算.
|
答案
(1)936-1365÷13+95,
=936-105+95,
=831+95,
=926;
(2)(
÷5 18
+1 3
)×0.25,5 18
=(
+15 18
)×0.25,5 18
=
×20 18
,1 4
=
;5 18
(3)
×49+87×13 50
,49 50
=13×
+87×49 50
,49 50
=(13+87)×
,49 50
=98;
(4)(
:3-3 4
)×(2-1 10
),2 3
=(
-1 4
)×(2-1 10
),2 3
=
×3 20
,4 3
=
.1 5