问题
解答题
4.44÷
67×
91×
|
答案
(1)4.44÷
+37 8
÷31 37
+25 111
×35 37
,111 25
=
×111 25
+8 37
×31 37
+111 25
×35 37
,111 25
=
×111 25
+(8 37
+31 37
)×35 37
,111 25
=
×111 25
+8 37
×66 37
,111 25
=
×(111 25
+8 37
),66 37
=
×2,111 25
=
;222 25
(2)67×
+65 66
,1 66
=(66+1)×
+65 66
,1 66
=65+
+65 66
,1 66
=65+1,
=66;
(3)91×
+9÷13-1÷13×100,1 13
=91×
+1 13
-9 13
×100,1 13
=91×
+1 13
×9-1 13
×100,1 13
=(91+9-100)×
,1 13
=0×
,1 13
=0;
(4)
+3 4
+3 28
+3 70
+3 130
,3 208
=
+3 1×4
+3 4×7
+3 7×10
+3 10×13
,1 13×16
=1-
+1 4
-1 4
+1 7
-1 7
+1 10
-1 10
+1 13
-1 13
,1 16
=1-
,1 16
=
.15 16