问题
解答题
用递等式计算 0.36×11
18
0.56÷[(3.6×
|
答案
(1)0.36×11
+134 7
÷3 7
,7 9
=
×9 25
+81 7
×94 7
,9 7
=
+729 175
,846 49
+5103 1225
,21150 1225
=
,26253 1225
=21
;528 1225
(2)18
-(75 9
-25 13
)-1 3
÷8 13
,1 2
=18
-55 9
-2 39
×2,8 13
=18
-55 9
-2 39
,16 13
=18
-565 117
-6 117
,144 117
=12
;32 117
(3)0.56÷[(3.6×
-1.5)×4.4+5.6],5 12
=0.56÷[(1.5-1.5)×4.4+5.6],
=0.56÷[0×4.4+5.6],
=0.56÷5.6,
=0.1.