Erbijsommen t/m 1.000
Optellen
| 1. | 409 + 389 = |
798
|
658
|
596
|
531
|
| 2. | 480 + 343 = |
612
|
678
|
809
|
823
|
| 3. | 325 + 296 = |
805
|
621
|
655
|
636
|
| 4. | 390 + 380 = |
812
|
712
|
753
|
770
|
| 5. | 188 + 149 = |
207
|
364
|
463
|
337
|
| 6. | 258 + 158 = |
416
|
389
|
428
|
244
|
| 7. | 500 + 245 = |
745
|
866
|
983
|
881
|
| 8. | 259 + 190 = |
418
|
213
|
449
|
288
|
| 9. | 240 + 102 = |
251
|
383
|
243
|
342
|
| 10. | 310 + 158 = |
452
|
468
|
406
|
353
|
| 11. | 256 + 223 = |
281
|
479
|
380
|
410
|
| 12. | 381 + 315 = |
696
|
644
|
919
|
841
|