题目内容
脱式计算,能简算的要简算.
(六)(
-
)×9
(5)80×
+78×
(3)
+
÷
+
(4)六÷
÷
×
.
(六)(
| 5 |
| 3 |
| 六 |
| 9 |
(5)80×
| 5 |
| 79 |
| 5 |
| 79 |
(3)
| 7 |
| 9 |
| 六 |
| 5 |
| 4 |
| 5 |
| 3 |
| 8 |
(4)六÷
| 六 |
| 六0 |
| 六0 |
| 7 |
| 4 |
| 7 |
(1)(
-
)×9,
=
×9-
×9,
=4-1,
=4;
(v)80×
+78×
,
=(80+78)×
,
=148×
,
=10;
(3)
+
÷
+
,
=
+
+
,
=
+(
+
),
=
+1,
=1
;
(4)1÷
÷
×
,
=10÷
×
,
=7×
,
=4.
| v |
| 3 |
| 1 |
| 9 |
=
| v |
| 3 |
| 1 |
| 9 |
=4-1,
=4;
(v)80×
| 4 |
| 79 |
| 4 |
| 79 |
=(80+78)×
| 4 |
| 79 |
=148×
| 4 |
| 79 |
=10;
(3)
| 7 |
| 9 |
| 1 |
| v |
| 4 |
| 4 |
| 3 |
| 8 |
=
| 7 |
| 9 |
| 4 |
| 8 |
| 3 |
| 8 |
=
| 7 |
| 9 |
| 4 |
| 8 |
| 3 |
| 8 |
=
| 7 |
| 9 |
=1
| 7 |
| 9 |
(4)1÷
| 1 |
| 10 |
| 10 |
| 7 |
| 4 |
| 7 |
=10÷
| 10 |
| 7 |
| 4 |
| 7 |
=7×
| 4 |
| 7 |
=4.
练习册系列答案
相关题目