✔ 最佳答案
我係中二,
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2007-04-22 16:27:56 補充:
I hope I can help you~~~~~~~quicker to send to me~~~~~
2007-04-22 16:40:07 補充:
1)14x14-14x22/7 =196-44 =152
2007-04-22 16:43:22 補充:
2)(12 8)x3.14-12x3.14÷2-8x3.14÷2 =62.8-18.84-12.56 =31.4
2007-04-22 16:47:46 補充:
改正~1)14x22/7 =442)12.8x3.14÷2 12x3.14÷2 8x3.14÷2 =31.4 18.84 12.56 =62.8
2007-04-22 16:53:10 補充:
3)2x22/7 2x22/7÷4 2 4=6ㄧ 1ㄧ 7 7 6=7ㄧ 7
2007-04-22 16:55:05 補充:
3)2x22/7 2x22/7÷4....2... 4=6ㄧ 1ㄧ.....7.. 7.....6=7ㄧ.....7 不看那點`..'
2007-04-22 16:58:43 補充:
4)56x3.14÷2-40x3.14÷2=87.92-62.8=25.12
2007-04-22 17:00:00 補充:
5)62.8÷3.14x4=20x4=80
2007-04-22 17:02:56 補充:
6)11÷22/7x2x22/7=3.5x2x22/7=7x22/7=22
2007-04-22 17:05:19 補充:
7)(80-17.2)÷3.14÷2÷2=62.8÷3.14÷2÷2=20÷2÷2=10÷2=5
2007-04-22 17:08:42 補充:
8)(21x22/7)2次方=(66)2次方=4356cm2次方
2007-04-22 17:11:32 補充:
9)4x2x3.14÷4x3 4 4=25.12 4 4=33.12
2007-04-22 17:14:00 補充:
10)5x2x3.14÷4 5 5=7.85 5 5=17.85
2007-04-22 17:17:41 補充:
11)8x3.14÷4 (12-8)x3.14÷4 12 (12-8)=6.28 3.14 12 4=25.42
2007-04-22 17:20:47 補充:
12)6x3.14÷2 3x3.14÷4 2 (6-3 2)=9.42 2.355 2 5=18.775
2007-04-22 17:24:43 補充:
明白嗎???不明的可以問......