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Addition

Addition 2

Find which sum has the odd answer out

Don't use a calculator!!

1. (a) 287 (b) 309 (c) 187

326 237 412  
+233 +299 +246
2. (a) 336 (b) 256 (c) 307
422 309 236
+148 +340 +362  
3. (a) 311

(b)

 294

(c)

 325
307 355 402
+257 +227 +148  
4. (a) 435 (b) 396 (c) 287

269 319 376
+277 +266 +319  
5. (a) 401 (b) 339 (c) 375

355 286 319
+138 +270 +201  
6. (a) 324 (b) 281 (c) 199

331 329 321
+131 +265 +265
7. (a) 439 (b) 356 (c) 503

203 195 138
+173 +263 +174
8. (a) 396 (b) 435 (c) 511

237 187 209
+272 +284 +185

9.

 (a) 517 (b) 184 (c) 396
218 311 305
+215 +456 +249
10. (a) 455 (b) 512 (c) 432

302 331 217
+187 +101 +296
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