1. 13.5 (8) = ____ (15)
2. D78GG8 (17) = ____ (4)
3. 7.38 (9) = ____ (12) = ____ (16)
4. 3/7 (8) = ____ (10) = ____ (11)
5. 4/9 (10) = ____ (11) = ____ (13)
(1) 請寫出簡單的過程
(2) 列出短除法過程者優先
(3) 用²、³等者優先
(4) 過程、答案整齊者優先
(5) 如答案能用分數作答,請用分數作答
圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpa...
參考資料:
my maths knowledge
第三題得到 7又35/81 (10) 時為何不直接變為:
7 又 (2*16 + 3*1) / (5*16 + 1*1)
就可以即出:
7 又 23/51 (16)
為甚麼要先變為12進制再做呢?
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圖片參考:http://i212.photobucket.com/albums/cc82/doraemonpa...
參考資料:
my maths knowledge
第三題得到 7又35/81 (10) 時為何不直接變為:
7 又 (2*16 + 3*1) / (5*16 + 1*1)
就可以即出:
7 又 23/51 (16)
為甚麼要先變為12進制再做呢?