题目内容
(
+
)×24=
×24+
×24,这是运用了( )
| 7 |
| 4 |
| 1 |
| 3 |
| 7 |
| 4 |
| 1 |
| 3 |
| A.乘法交换律 | B.乘法结合律 | C.乘法分配律 |
(
+
)×24,
=
×24+
×24,
=42+8,
=50;
故选:C.
| 7 |
| 4 |
| 1 |
| 3 |
=
| 7 |
| 4 |
| 1 |
| 3 |
=42+8,
=50;
故选:C.
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题目内容
| 7 |
| 4 |
| 1 |
| 3 |
| 7 |
| 4 |
| 1 |
| 3 |
| A.乘法交换律 | B.乘法结合律 | C.乘法分配律 |
| 7 |
| 4 |
| 1 |
| 3 |
| 7 |
| 4 |
| 1 |
| 3 |