14.直接写得数.
0 158160 158168 158174 158178 158184 158186 158190 158196 158198 158204 158210 158214 158216 158220 158226 158228 158234 158238 158240 158244 158246 158250 158252 158254 158255 158256 158258 158259 158260 158262 158264 158268 158270 158274 158276 158280 158286 158288 158294 158298 158300 158304 158310 158316 158318 158324 158328 158330 158336 158340 158346 158354 199269
13.8-1.9= | 1÷100%= | 4.8+0.02= | $\frac{1}{6}$÷20÷$\frac{1}{6}$= |
$\frac{1}{4}$÷7= | 1045-998= | 0.24÷0.6= | 2÷14+$\frac{6}{7}$= |