根据乘法运算定律在横线里填上适当的数.
×
×5=
×
(15+
)×15=
×
×
+
×
=
×(
+
)
| 2 |
| 5 |
| 2 |
| 7 |
| 2 |
| 5 |
| 2 |
| 5 |
5
5
×| 2 |
| 7 |
(15+
| 3 |
| 5 |
15×
15×
×15
15
+| 3 |
| 5 |
| 3 |
| 5 |
| 3 |
| 15 |
| 3 |
| 15 |
| 1 |
| 9 |
| 4 |
| 5 |
| 1 |
| 9 |
| 1 |
| 5 |
| 1 |
| 9 |
| 1 |
| 9 |
| 4 |
| 5 |
| 4 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |