1、 8 27 2 8 8 6 2 8 四、计算下面各题。13 1 1 1 19 14 4 7 10 52 5 7 20 15 3 8 五、计算下面各题。1 5 4 11 1 1 1 6 1 6 ( ) ( ) 6 6 9 12 12 2 7 5 10 5 5 2 3 2 2 1 7 1 4 7 2 4 5 5 3 3 2 12 5 5 1235%= =( ):( ) 0.25= ( )%= ( ):18 2.1:4.9 0.27:0.81 92:69 54 8 1 5 6 1 10 10 30 7 8 4 5 2 11 11 11 1 5 1 1 4 1 4 27 3 6 7 4 5 8 17
2、1 1 1 14 36 1 7 14 17 5 20 15 35 2 6 8 5 2 8 1 1 5 9 7 1 ( ) ( )7 6 9 9 9 2 4 5 10 4 8 1 4 5 5 1 5 7 4 5 5 7 5 5 7 7 5 12 11 11 12175%= =( ):( ) 0.4= ( )%= ( ):5 5.6 0.2:0.7 72:18 7 5 7 4 1 1 1 20 3 4 6 3 4 5 12 5 5 1 1 1 1 9 1 8 12 4 2 2 4 8 7 11 7 18 10 11 1 1 4 20 11 11 11 10 25 7 5 1 1 2 4 1 4 9
3、 4 7 6 ( )2 4 5 3 12 5 8 5 10 7 5 4 3 2 2 1 5 2 9 54 7 7 5 5 2 17 11 11 1795%= =( ):( ) 0.9= ( )%= ( ): 3.2:6.4 0.12:0.54 56:42 81 1 1 2 1 1 1 13 2 8 2 3 5 2 18 11 11 1 6 1 9 7 1 6 32 4 7 2 8 8 2 11 1 16 1 1 36 1 1 7 22 7 19 5 35 4 2 4 7 4 2 1 1 3 7 7 1 ( )5 6 7 3 12 8 2 5 20 8 9 1 4 5 5 1 5 2 1 58
4、5 5 7 7 5 17 3 3 17285%= =( ):( ) 0.05= ( )%= ( ): 2:4 0.27:0.9 88:66 60 1 1 5 3 1 16 14 64 7 7 4 4 6 15 7 7 1 6 1 8 4 1 3 32 6 7 3 7 5 2 19 7 1 1 1 4 5 1 8 19 11 6 20 5 4 3 2 5 2 13 1 5 1 9 1 5 ( )( )3 4 3 12 6 6 6 5 10 4 7 1 4 3 3 1 1 5 2 1 3 6 5 5 7 7 3 13 7 7 1345%= =( ):2.1 0.08:0.28 126:1 1 1
5、1 4 12 12 36 2 4 5 5 3 11 7 7 7 1 5 2 7 1 9 24 3 5 6 3 6 6 11 1 12 5 1 6 5 1 16 44 7 4 10 5 4 2 1 1 2 2 1 4 8 8 7 1 ( ) ( )2 4 3 3 12 5 7 5 15 7 5 1 2 2 2 1 1 4 1 14 3 3 3 3 2 18 5 5 18( ) 1= ( )%= ( ):12 0.9:2.4 0.16:0.8 162:54 36 7 1 1 1 1 1 3 6 5 5 2 6 14 7 7 1 1 8 1 3 1 4 16 4 8 7 3 4 4 11 1 16
6、17 6 1 6 1 18 55 5 16 5 5 5 3 1 7 8 4 1 1 1 4 7 1 7 2 5 3 12 7 4 5 15 2 7 1 4 3 3 1 5 1 6 56 5 5 7 7 3 19 7 7 19225%= =( ):( ) 0.95= ( )%= ( ):9 0.02:0.12 174:87 80 1 1 1 5 4 17 34 8 4 2 4 5 16 11 11 2 7 9 2 2 1 3 32 3 6 8 3 3 6 17 7 16 19 14 26 1 1 6 68 11 20 15 25 5 5 1 5 8 4 1 1 1 1 9 1 ( )6 6 3 3 6 3 3 5 10 4 5 2 3 2 2 1 5 1 2 54 5 5 5 5 2 13 3 3 1355%= =( ):( ) 0.6= ( )%= ( ):4 4.5:6.3 0.06:0.18 80:48 10 1 1 1 1 1