計數....

2007-09-09 7:53 pm
1)43-36÷2+5          
2)25-3x8
3)36÷3-9             
4)13x(24-15)
5)22x6÷11            
6)144÷12-4x3
7)(14+6x7)÷7         
8)43-36x2/3
9)(5x3+4x12-7)÷(8+6) 
10)〔2x3+4x(12-7)〕÷(26-13)

回答 (2)

2007-09-09 8:00 pm
✔ 最佳答案
1)43-36÷2+5
=43-18+5
=30

2)25-3x8
=25-24
=1

3)36÷3-9
=12-9
=3

4)13x(24-15)
=13*9
=117

5)22x6÷11  
=66/11
=6

6)144÷12-4x3
=12-12
=0

7)(14+6x7)÷7 
=(14+42)/7
=56/7
=8


8)43-36x2/3
=43-24
=19

9)(5x3+4x12-7)÷(8+6)
=(15+48-7)/14
=56/14
=4

10)〔2x3+4x(12-7)〕÷(26-13)
=(6+4*5)/13
=(6+20)/13
=26/13
=2

2007-09-09 12:01:08 補充:
第5題錯左-.-係5)22x6÷11  =132/11=12
參考: me
2007-09-09 7:59 pm
1.30
2.1
3.3
4.117
5.12
6.0
7.8
8.19
9.4
10.2
參考: Me


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