问题
解答题
|
答案
(1)9×
+5 18
×9,13 18
=9×(
+5 18
),13 18
=9×1,
=9;
(2)
+(11 27
+5 8
)×8,2 27
=
+11 27
×8+5 8
×8,2 27
=(
+11 27
)+5,16 27
=1+5,
=6;
(3)(5.6-1.6÷2)×2.5,
=(5.6-0.8)×2.5,
=4.8×2.5,
=12;
(4)(
+5 6
+7 12
)÷3 8
,1 48
=
×48+5 6
×48+7 12
×48,3 8
=40+28+18,
=86;
(5)1064-780÷0.75+8.25,
=1064-1040+8.25,
=24+8.25,
=32.25;
(6)
-(8 9
+0.25)÷2.25,1 6
=
-8 9
÷2.25,5 12
=
-8 9
,5 27
=
.19 27