1.口算
0 158120 158128 158134 158138 158144 158146 158150 158156 158158 158164 158170 158174 158176 158180 158186 158188 158194 158198 158200 158204 158206 158210 158212 158214 158215 158216 158218 158219 158220 158222 158224 158228 158230 158234 158236 158240 158246 158248 158254 158258 158260 158264 158270 158276 158278 158284 158288 158290 158296 158300 158306 158314 199269
19×40= | 32×3= | 40×70= | 15×20= | 7×70= | 14×50= |
160×2= | 7×700= | 44×20= | 25×8= | 50×80= | 90×90= |