正方形數！有冇人識呀？唔該！
回答 (7)
2007-03-02 6:34 am
✔ 最佳答案
吾明你講咩..不過到試下答你如困係邊長:
1=1cm平方.1cm立方
2=4=8
3=9=27
4=16=64
5=25=125
6=36=216
7=49=334
8=64=512
9=63=567
10=100=1000(全都是心算...有錯吾好怪)
你可以用計算器計
2007-03-02 10:47 am
in simple
1正方形數=1^2=1
2正方形數=2^2=1+3=4
3正方形數=3^2=1+3+5=9
得知
n^2= 1+3+5+......+(2n-3)+(2n-1)
你一路咁+落去
心水清的,去到5x都memorise到
answer : 1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400
1正方形數=1^2=1
2正方形數=2^2=1+3=4
3正方形數=3^2=1+3+5=9
得知
n^2= 1+3+5+......+(2n-3)+(2n-1)
你一路咁+落去
心水清的,去到5x都memorise到
answer : 1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400
參考: knowledge
2007-03-02 6:45 am
1 , 4 , 9 , 16 , 25 , 36 , 49 , 64 , 81 , 100 , 121 , 144 , 169 , 196 , 225 , 256 , 289 , 324 , 361 , 400
2007-03-02 6:33 am
1,4,9,16,25,36,49,64,81,100,121,144,169,196,225,256,289,324,361,400
參考: me!
2007-03-02 6:31 am
1x1=1
2x2=4
3x3=9
4x4=16
5x5=25
6x6=36
7x7=49
8x8=64
9x9=81
10x10=100
11x11=121
12x12=144
13x13=169
14x14=196
15x15=225
16x16=256
17x17=289
18x18=324
19x19=361
20x20=400
2x2=4
3x3=9
4x4=16
5x5=25
6x6=36
7x7=49
8x8=64
9x9=81
10x10=100
11x11=121
12x12=144
13x13=169
14x14=196
15x15=225
16x16=256
17x17=289
18x18=324
19x19=361
20x20=400
參考: me
2007-03-02 6:30 am
1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361, 400
參考: calculator
2007-03-02 6:29 am
1,4,9,16,25,36,49,64,81,100, 121,144, 169 ,225, 256, 289, 361, 400
收錄日期: 2021-04-26 14:10:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070301000051KK04787