题目内容
4
×5+32
÷4+0.25×124.
| 1 |
| 5 |
| 4 |
| 7 |
4
×5+32
÷4+0.25×124,
=
×5+(32+
)×
+
×124,
=21+32×
+
×
+31,
=21+8+
+31,
=60
.
| 1 |
| 5 |
| 4 |
| 7 |
=
| 21 |
| 5 |
| 4 |
| 7 |
| 1 |
| 4 |
| 1 |
| 4 |
=21+32×
| 1 |
| 4 |
| 4 |
| 7 |
| 1 |
| 4 |
=21+8+
| 1 |
| 7 |
=60
| 1 |
| 7 |
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