Բ ϱ Խ

ۼ ÷


ȳϼ~
ΰ谡 Ȯ ǥ ϸ ذ
Ͻʴϴ. , ǸŽ  ܰ Ǿ ־ϴ.


ǸŸ ι ߽ϴ.

(1) 3/8 ʻǰ ()α 4,000 Ǹ߽ϴ.
* : 4,000
* : ʻǰ: 3,000


(2) 7/9: ()κ ǰ (50%) ()α
5,000 Ǹ߽ϴ.
*: 5,000
*:
() 9,000(8,000+1,000)
(50%) 4,500

(3)
3 8 3,000 7 9 4,500 հ 7,5000 Դϴ.


ǸŽ  Ǿ ȿ ܰڷᰡ
õǾ Ͻð غñ ٶϴ.


õ ǽϼ~


2021. 2. 4.



ð

ȸ

*

2021.02.03

ȳϼ, ۳⿡ ÷ֽ Ϸ ߿ ϴ ذ ȵǾ 帳ϴ.


2. ()ѱ 20x1⵵ ŷ , ӱϹ Ͽ ⸻ ΰ? (, Ѵ.)


11 ̿ ǰ 3,000 ̴.

29 ()κ ǰ Ͽµ, Դ 8,000 Կ 1,000 ԵǾ ʴ.

38 ʻǰ ()α 4,000 ǸϿ.

79 ()κ ǰ ()α ܻ 5,000 ǸϿ.

-


ؼ  

() : 3,000+(8,000+1,000)/2 = 7,500 Ǿִµ,


ݾ ()κ ǰ Ǹ ǸŰɿ() 9,000

38 ʻǰ ()α 4,000 ǸϿٴ ǰ 3,000 4,000 ǸϿٴ ؼ̵Ǵ°ǰ? ذ ʽϴ ̤ 


 

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Խù ˻
ݱ
15 л Ŀ հ

[ ̿ ]

߰ ڰݺ 1:1 н

-

-

/̿

1. ̿
1) û ȳ
2) ̺Ʈ ߺ
3) ſ ڿ Ͽ Ŀ ߰縦 Ŀ ׷ ο Żǰ̳ ̺Ʈ, ֽ ȳ û ⿡ ´ 񽺸 ϱ .
(Ŀ׷: Ŀΰ, Ŀ, Ŀ, Ŀ߱, ĿϺ, Ŀ, Ŀ, Ŀӿ, Ŀ, Ŀ, Ŀҹ, Ŀп, Ŀð, , л, Ŀ )

2. ̿ ׸: ̸, ޴ȣ

3. /̿ Ⱓ: ÷κ 1Ⱓ ̿ϸ, ߰ 1 ıմϴ. ( 2 ) ٸ, ̿Ⱓ ̿뿡 öȸϽô 쿡 ıմϴ.

4. ûڴ ̿ ź ֽϴ. , ź 쿡 û ѵ˴ϴ.


û

X
isms