题目内容
用简便方法计算：
(
+
+
)×72；
÷13+
×
．
(
| 5 |
| 12 |
| 1 |
| 9 |
| 3 |
| 8 |
| 8 |
| 17 |
| 1 |
| 13 |
| 9 |
| 17 |
(
+
+
)×72，
=
×72+
×72+
×72；
=30+8+27，
=65；
÷13+
×
，
=
×
+
×
，
=（
+
）×
，
=1×
，
=
．
| 5 |
| 12 |
| 1 |
| 9 |
| 3 |
| 8 |
=
| 5 |
| 12 |
| 1 |
| 9 |
| 3 |
| 8 |
=30+8+27，
=65；
| 8 |
| 17 |
| 1 |
| 13 |
| 9 |
| 17 |
=
| 8 |
| 17 |
| 1 |
| 13 |
| 1 |
| 13 |
| 9 |
| 17 |
=（
| 8 |
| 17 |
| 9 |
| 17 |
| 1 |
| 13 |
=1×
| 1 |
| 13 |
=
| 1 |
| 13 |
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