问题
解答题
脱式计算 6-
{1-(
3.6×2
|
答案
(1)6-
×5 3
-1 2
,1 6
=6-
-5 6
,1 6
=6-(
+5 6
),1 6
=6-1,
=5;
(2){1-(
-1 12
)}÷1 18
,5 8
=(1-
)÷1 36
,5 8
=
×35 36
,8 5
=1
;5 9
(3)3.6×2
÷16.9÷(38 25
×1.16)×1.3,3 5
=3.6×2
÷16.9÷4.176×1.3,8 25
=3
×23 5
÷168 25
÷49 10
×122 125
,3 10
=
;2 13
(4)
+1 1×2
+1 2×3
+…+1 3×4
,1 99×100
=1-
+1 2
-1 2
+1 3
-1 3
+…+1 4
-1 99
,1 100
=1-
,1 100
=
.99 100