问题
解答题
能简算的要简算 (
42000÷125÷8
|
答案
(1)(
+3 4
)÷5 16 1 36
=
×36,17 16
=
;153 4
(2)
÷5 7
+1 8
×82 7
=
×8+5 7
×8,2 7
=(
+5 7
)×8,2 7
=1×8,
=8;
(3)42000÷125÷8
=42000÷(125×8),
=42000÷1000,
=42;
(4)
×[15 8
-(4 5
+1 5
)]1 3
=
×[15 8
-4 5
],8 15
=
×15 8
,4 15
=
.1 2