题目内容
看谁算得准，能简算的要简算．
(
+38)÷19
×
×0.75×
÷[(
-
)×3]
×
+
÷
．
(
| 19 |
| 40 |
| 3 |
| 4 |
| 2 |
| 9 |
| 5 |
| 9 |
| 7 |
| 20 |
| 5 |
| 6 |
| 2 |
| 3 |
| 1 |
| 7 |
| 5 |
| 12 |
| 5 |
| 12 |
| 7 |
| 5 |
（1）(
| 19 |
| 40 |
=(
| 19 |
| 40 |
| 1 |
| 19 |
=
| 19 |
| 40 |
| 1 |
| 19 |
| 1 |
| 19 |
=
| 1 |
| 40 |
=2
| 1 |
| 40 |
（2）
| 3 |
| 4 |
| 2 |
| 9 |
| 5 |
| 9 |
=（
| 3 |
| 4 |
| 2 |
| 9 |
| 5 |
| 9 |
=
| 1 |
| 6 |
| 5 |
| 12 |
=
| 5 |
| 72 |
（3）
| 7 |
| 20 |
| 5 |
| 6 |
| 2 |
| 3 |
=
| 7 |
| 20 |
| 1 |
| 6 |
=
| 7 |
| 20 |
| 1 |
| 2 |
=
| 7 |
| 10 |
（4）
| 1 |
| 7 |
| 5 |
| 12 |
| 5 |
| 12 |
| 7 |
| 5 |
=
| 1 |
| 7 |
| 5 |
| 12 |
| 5 |
| 12 |
| 5 |
| 7 |
=（
| 1 |
| 7 |
| 5 |
| 7 |
| 5 |
| 12 |
=
| 6 |
| 7 |
| 5 |
| 12 |
=
| 5 |
| 14 |
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+
÷
×70）÷
-
）]
+（36+
）÷9．