问题
解答题
计算,能简算的要简算.
|
答案
(1)
×0.375÷2 7
,6 7
=
×0.375×2 7
,7 6
=0.125;
(2)2-
÷6 13
-9 26
,2 3
=2-
-4 3
,2 3
=2-(
+4 3
),2 3
=2-2,
=0;
(3)
×10 3
+5 7
×20 3
,5 7
=(
+10 3
)×20 3
,5 7
=10×
,5 7
=
;50 7
(4)48×(
+7 12
),1 8
=48×
+48×7 12
,1 8
=28+6,
=34;
(5)(0.75-
)×(5 16
+2 7
),1 14
=
×7 16
,5 14
=
;5 32
(6)[1-(
-3 4
)]÷3 8
,5 29
=[1-
]÷3 8
,5 29
=
÷5 8
,5 29
=
.29 8