1. 421 + 223 =___

2. 360 + 113 =___

3. 510 + 488 =___

4. 510 + 280 =___

5. 328 + 611 =___

6. 335 + 344 =___

7. 713 + 286 =___

8. 800 + 200 =__

1. 182 + 16

2. 777 + 620

3. 252 + 33

4. 311 + 288

5. 871 + 21

6. 628 + 351

7. 620 + 215

8. 419 + 260

1. 162 + 315 = 

2. 354 + 132 =

3. 243 +421 =

4. 176 + 223 =

5. 227 + 452 =

6. 452 + 313 =

1. 3240 + 389 =

2. 7 45 + 4253 =

3. 2 308 + 1546 =

4. 654 3 + 3723 =

5. 4608 + 2 390

6. 3 765 + 2 413 =

7. 5 987 + 2 012 =

8.4 444 + 5 555 =

1. 2456 + 421 =

2. 3520 + 340=___

3. 6708 + 1021= ___

4. 4037+ 3742=___

5. 3344 + 3405 =___

6. 7654 + 1234 =___

7. 8765 + 1102=___

8. 6172 + 3712 =___

1. 243 + 425 =___

2. 494 + 705 =___

3. 586 + 412 =

4. 277 + 722 =

5. 918 + 101 =___

6. 672 + 326 =___

7. 302 + 604 =

8. 495 + 420 =