题目内容
用你喜欢的方法算：
÷7+
×
-（
-
）
+
×
÷2
×（
+
）+
．
| 5 |
| 12 |
| 7 |
| 12 |
| 1 |
| 7 |
| 7 |
| 8 |
| 5 |
| 9 |
| 1 |
| 8 |
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
| 12 |
| 5 |
| 5 |
| 6 |
| 3 |
| 4 |
| 4 |
| 5 |
①
÷7+
×
=
×
+
×
=（
+
）×
=1×
=
；
②
-（
-
）
=
-
+
=（
+
）-
=1-
=
；
③
+
×
÷2
=
+
×
×
=
+
=
；
④
×（
+
）+
=
×
+
×
+
=2+
+
=2+（
+
）
=2+
=4
．
| 5 |
| 12 |
| 7 |
| 12 |
| 1 |
| 7 |
=
| 5 |
| 12 |
| 1 |
| 7 |
| 7 |
| 12 |
| 1 |
| 7 |
=（
| 5 |
| 12 |
| 7 |
| 12 |
| 1 |
| 7 |
=1×
| 1 |
| 7 |
=
| 1 |
| 7 |
②
| 7 |
| 8 |
| 5 |
| 9 |
| 1 |
| 8 |
=
| 7 |
| 8 |
| 5 |
| 9 |
| 1 |
| 8 |
=（
| 7 |
| 8 |
| 1 |
| 8 |
| 5 |
| 9 |
=1-
| 5 |
| 9 |
=
| 4 |
| 9 |
③
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
=
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 2 |
=
| 1 |
| 6 |
| 1 |
| 4 |
=
| 5 |
| 12 |
④
| 12 |
| 5 |
| 5 |
| 6 |
| 3 |
| 4 |
| 4 |
| 5 |
=
| 12 |
| 5 |
| 5 |
| 6 |
| 12 |
| 5 |
| 3 |
| 4 |
| 4 |
| 5 |
=2+
| 9 |
| 5 |
| 4 |
| 5 |
=2+（
| 9 |
| 5 |
| 4 |
| 5 |
=2+
| 13 |
| 5 |
=4
| 3 |
| 5 |
练习册系列答案
轻巧夺冠周测月考直通中考系列答案
相关题目