列式「+ - x / 」

2006-12-26 8:44 pm
把下面o既數字,用「+ - x / 」計出比定o既答案..列式

答案:0 數字:0.1 ,0.5,2,4.2
答案:0.1 數字: 3.2 ,5,10,16
答案:28 數字: 0.4,5,10,75
唔該........

回答 (3)

2006-12-26 9:08 pm
✔ 最佳答案
(1) 4.2x0.5 -2-0.1=0

(2) 3.2/ 16x5 /10=0.1

(3) 75x0.4 -10/5=28
2006-12-26 9:15 pm
1. 4.2 x 0.5 - 0.1 - 2 = 0

2. (3.2 x 5 / 10 ) / 16 = 0.1

3. 計唔到
只計到︰
(75 - 5) x 10 x 0.4 = 280
or (75 - 5) x 0.4 / 10 = 2.8
2006-12-26 9:03 pm
4.2 x 0.5 - 2 - 0.1 = 0

16/3.2/10/5= 0.1

(75-10+5) x 0.4 = 28


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