點算點算~~~5識做功課牙 v

2007-09-18 3:05 am
我5識點做牙((異分數+法))
如題:
5 3
- + -
8 4

我既答案係咁:
20 24
- + -
32 32

=44
-
32

12
=1 -
32

| 6
=1 -
| 16

但老師話
5 3
- + -
[[8]] 4]]

[[8]]已經係lcm,5洗再擴分
但我又5識點計
{5} {3} [[上面5知點]]
- + -
8 8 [[分母係8,4x2...咁分子點算]]??
i am a pig
have something dont know
plz teach me
thx
英文都5係幾好
嘻嘻...''

回答 (3)

2007-09-18 3:12 am
✔ 最佳答案
5/8+3/4
=5/8+6/8
=11/8
=1/1/3

2007-09-17 19:12:57 補充:
打錯字=.=第四行>>1/3/8
參考: myself
2007-09-18 3:15 am
5 3
- + -
8 4

5 6 3×2=6
= - + - (將 -----------)
8 8 4×2=8

11 3
= - or 1 -
8 8

2007-09-17 19:18:04 補充:
5/8 3/4=5/8 6/8(將3×2/4×2)=11/8 OR1又8分3
2007-09-18 3:13 am
我5識點做牙((異分數+法))
如題:
5 3
- + -
8 4

= 5 / 8 + 3X2 / 4X2
= 5 / 8 + 6 / 8
= 11/8


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