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乘法结合律 [chéng fǎ jié hé lǜ]
[数] associative law of multiplication
- 这就是乘法结合律，请跟着老师读。
This is the Associative Property of Multiplication. Read after me, please. - 引导学生概括出乘法的意义和乘法交换律、结合律。
Lead the students to conclude the above concept and laws. - 我们容易验证乘法满足结合律和交换律，并且由加法结果的唯一性得出乘法结果的唯一性和乘法消去律。
We then can verify the associative law and the commutative law for multiplication, and the uniqueness of the result of addition indicates the uniqueness and the cancellation law for multiplication.
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