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07擴約分與加減01擴分與約分(填充03)
為節省時間及避免不必要的錯誤，每題只需寫出答案，不用填單位。
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(21) 21 / 35
＝3 / A
A 是多少?
10 points
Your answer
(22)
18
/ 54
＝ A / 6
A 是多少?
10 points
Your answer
(23)
24 / 28 ＝ A / 14
A 是多少？
10 points
Your answer
(24)
3 / 10 ＝ 18 / A
A 是多少？
10 points
Your answer
(25)
5又 5 / 8 ＝ 5又 A / 64
A 是多少？
10 points
Your answer
(26)
48 / 36 = A / 6
A 是多少？
10 points
Your answer
(27)
2又 6 / 16 ＝ 2又 3/ A
A 是多少？
10 points
Your answer
(28)
35 / 63 ＝ 5/ A
A 是多少？
10 points
Your answer
(29)
8 / 24 ＝ A / 3
A 是多少？
10 points
Your answer
(30)
5又 18/ 27 ＝ 5又 2/ A
A 是多少？
10 points
Your answer
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