问题
解答题
看谁都能算对!(能简算的请写出简算过程)
|
答案
(1)624-3.2×1.5÷0.1,
=624-4.8÷0.1,
=624-48,
=576;
(2)9.43+0.78-2.43,
=9.43-2.43+0.78,
=7+0.78,
=7.78;
(3)
+(2 3
+1 2
)×2 3
,2 7
=
+2 3
×7 6
,2 7
=
+2 3
,1 3
=1;
(4)
×5+16 27
÷11 27
,1 5
=
×5+16 27
×5,11 27
=(
+16 27
)×5,11 27
=1×5,
=5;
(5)
-[(5 6
+1 5
)÷1 3
],8 9
=
-[5 6
÷8 15
],8 9
=
-5 6
,3 5
=
.7 30