题目内容
脱式计算
4.85-
+5.15-
+
×(
-
)
5×(
+
)×17
÷[(
+
)×
].
4.85-
| 5 |
| 9 |
| 4 |
| 9 |
| 1 |
| 13 |
| 12 |
| 13 |
| 5 |
| 2 |
| 1 |
| 3 |
5×(
| 1 |
| 15 |
| 2 |
| 17 |
| 3 |
| 4 |
| 4 |
| 5 |
| 1 |
| 4 |
| 3 |
| 7 |
(1)4.85-
+5.15-
=(4.85+5.15)-(
+
),
=10-1,
=9;
(2)
+
×(
-
)
=
+
×
-
×
,
=
+
-
,
=
;
(3)5×(
+
)×17
=5×17×(
+
),
=85×
+85×
,
=
+ 10,
=15
;
(4)
÷[(
+
)×
]
=
÷
÷(
+
),
=
÷
,
=
.
| 5 |
| 9 |
| 4 |
| 9 |
=(4.85+5.15)-(
| 5 |
| 9 |
| 4 |
| 9 |
=10-1,
=9;
(2)
| 1 |
| 13 |
| 12 |
| 13 |
| 5 |
| 2 |
| 1 |
| 3 |
=
| 1 |
| 13 |
| 12 |
| 13 |
| 5 |
| 2 |
| 12 |
| 13 |
| 1 |
| 3 |
=
| 1 |
| 13 |
| 30 |
| 13 |
| 4 |
| 13 |
=
| 27 |
| 13 |
(3)5×(
| 1 |
| 15 |
| 2 |
| 17 |
=5×17×(
| 1 |
| 15 |
| 2 |
| 17 |
=85×
| 1 |
| 15 |
| 2 |
| 17 |
=
| 17 |
| 3 |
=15
| 2 |
| 3 |
(4)
| 3 |
| 4 |
| 4 |
| 5 |
| 1 |
| 4 |
| 3 |
| 7 |
=
| 3 |
| 4 |
| 3 |
| 7 |
| 4 |
| 5 |
| 1 |
| 4 |
=
| 7 |
| 4 |
| 21 |
| 20 |
=
| 5 |
| 3 |
练习册系列答案
相关题目