题目内容
|
|
| ||||||||||||||
（
| 3÷
|
（1）
×14×
=
×（14×
）
=
×
=3；
（2）
÷14
=
×
=
；
（3）
÷
×
÷
=（
×3）×（
×
）
=2×
=
；
（4）（
-
）×
=
×
=
；
（5）3÷
-
÷3
=3×
-
×
=5-
=4
．
| 2 |
| 5 |
| 15 |
| 28 |
=
| 2 |
| 5 |
| 15 |
| 28 |
=
| 2 |
| 5 |
| 15 |
| 2 |
=3；
（2）
| 4 |
| 5 |
=
| 4 |
| 5 |
| 1 |
| 14 |
=
| 2 |
| 35 |
（3）
| 2 |
| 3 |
| 1 |
| 3 |
| 5 |
| 7 |
| 3 |
| 7 |
=（
| 2 |
| 3 |
| 5 |
| 7 |
| 7 |
| 3 |
=2×
| 5 |
| 3 |
=
| 10 |
| 3 |
（4）（
| 1 |
| 3 |
| 1 |
| 6 |
| 2 |
| 3 |
=
| 1 |
| 6 |
| 2 |
| 3 |
=
| 1 |
| 9 |
（5）3÷
| 3 |
| 5 |
| 3 |
| 5 |
=3×
| 5 |
| 3 |
| 3 |
| 5 |
| 1 |
| 3 |
=5-
| 1 |
| 5 |
=4
| 4 |
| 5 |
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