19．直接写得数．
0 154918 154926 154932 154936 154942 154944 154948 154954 154956 154962 154968 154972 154974 154978 154984 154986 154992 154996 154998 155002 155004 155008 155010 155012 155013 155014 155016 155017 155018 155020 155022 155026 155028 155032 155034 155038 155044 155046 155052 155056 155058 155062 155068 155074 155076 155082 155086 155088 155094 155098 155104 155112 199269
| 24-8+10= | 3×6÷9= | 0.34+0.45= | 8-4.6= |
| 0.57+0.9= | 3.8+0.12= | 1.3-0.7= | 0.6-0.37= |