计算下列各题,能简算的要简算.65×67-67÷54-915÷95-23(34-110÷2)×51434×512+512×54.-数学
-
),
=
×1,
=
;
(2)4-
÷
-
,
=4-
-
,
=4-(
+
),
=4-1,
=3;
(3)(
-
÷2)×
,
=(
-
)×
,
=
×
,
=
;
(4)
×
+
×
,
=
×(
1 |
5 |
=
6 |
7 |
=
6 |
7 |
(2)4-
9 |
15 |
9 |
5 |
2 |
3 |
=4-
1 |
3 |
2 |
3 |
=4-(
1 |
3 |
2 |
3 |
=4-1,
=3;
(3)(
3 |
4 |
1 |
10 |
5 |
14 |
=(
3 |
4 |
1 |
20 |
5 |
14 |
=
14 |
20 |
5 |
14 |
=
1 |
4 |
(4)
3 |
4 |
5 |
12 |
5 |
12 |
5 |
4 |
=
5 |
12 |