题目内容
下面的计算对吗?把不对的改正过来.(对的打“√”,错的打“×”)
×5-3=
×2=
______,改正:______
×
+
×
=(
+
)×(
+
)=
×1=
______,改正:______.
| 7 |
| 5 |
| 7 |
| 5 |
| 14 |
| 5 |
| 14 |
| 9 |
| 5 |
| 6 |
| 14 |
| 9 |
| 1 |
| 6 |
| 14 |
| 9 |
| 14 |
| 9 |
| 5 |
| 6 |
| 1 |
| 6 |
| 28 |
| 9 |
| 28 |
| 9 |
(1)
×5-3=7-3=4;
(2)
×
+
×
=
×(
+
)=
×1=
;
故答案为:×,
×5-3=7-3=4;×,
×
+
×
=
×(
+
)=
×1=
.
| 7 |
| 5 |
(2)
| 14 |
| 9 |
| 5 |
| 6 |
| 14 |
| 9 |
| 1 |
| 6 |
| 14 |
| 9 |
| 5 |
| 6 |
| 1 |
| 6 |
| 14 |
| 9 |
| 14 |
| 9 |
故答案为:×,
| 7 |
| 5 |
| 14 |
| 9 |
| 5 |
| 6 |
| 14 |
| 9 |
| 1 |
| 6 |
| 14 |
| 9 |
| 5 |
| 6 |
| 1 |
| 6 |
| 14 |
| 9 |
| 14 |
| 9 |
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