问题
解答题
|
答案
(1)59×
,17 58
=58×
+1×17 58
,17 58
=17+
,17 58
=17
;17 58
(2)
×5 7
+15 8
×2 7
,5 8
=(
+15 7
)×2 7
,5 8
=2×
,5 8
=1
;1 4
(3)
-5 7
×5 7
,1 5
=
-5 7
,1 7
=
;4 7
(4)
×13 24
×8 19
,9 26
=
×13 24
×9 26
,8 19
=
×9 48
,8 19
=
;3 38
(5)(
+5 12
)×24,3 8
=
×24+5 12
×24,3 8
=10+9,
=19;
(6)16-8×
,3 8
=16-3,
=13.