20.直接写出得数.
0 157173 157181 157187 157191 157197 157199 157203 157209 157211 157217 157223 157227 157229 157233 157239 157241 157247 157251 157253 157257 157259 157263 157265 157267 157268 157269 157271 157272 157273 157275 157277 157281 157283 157287 157289 157293 157299 157301 157307 157311 157313 157317 157323 157329 157331 157337 157341 157343 157349 157353 157359 157367 199269
5-3.6= | 4.7+3.5= | 1-0.6= | 0.36+0.54= |
12+24÷8= | 25×7×4= | 3.8+0.7= | 0.49×100= |