问题
解答题
能简算的要简算
|
答案
(1)
×10 11
×13×11,1 13
=(
×11)×(10 11
×13),1 13
=10×1,
=10;
(2)(
+4 5
)×3 10
,10 3
=
×4 5
+10 3
×3 10
,10 3
=
+1,8 3
=
;11 3
(3)
×21+28×13 49
,13 49
=
×(21+28),13 49
=
×49,13 49
=13;
(4)
-4 5
×4 5
,5 6
=
×(1-4 5
),5 6
=
×4 5
,1 6
=
;2 15
(5)(
+3 4
)×32,5 8
=
×32+3 4
×32,5 8
=24+20,
=44;
(6)99×
,5 98
=(98+1)×
,5 98
=98×
+1×5 98
,5 98
=5+
,5 98
=5
.5 98