Contact us
Choose a category below so we can get back to you as quickly as possible.
用乘法交換律(除法也可看乘法,即除以一個數等於乘以一個數的倒數,國中會學) 所以原式化簡得到 378÷378×(265÷265)×(194÷194) =1x1x1 =1
12×(20+1) =12×20+12×1 =240+12 =252
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.