Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
295 – 120 =
2
175
|
2.
934 + 30 =
2
964
|
3.
437 – 319 =
2
118
|
4.
857 – 448 =
2
409
|
|
5.
424 + 281 =
705
2
|
6.
327 + 421 =
748
2
|
7.
676 + 11 =
2
687
|
8.
905 + 31 =
936
2
|
|
9.
325 + 585 =
2
910
|
10.
330 – 190 =
140
2
|
11.
834 – 142 =
692
2
|
12.
975 – 887 =
88
2
|
|
13.
788 – 504 =
2
284
|
14.
736 + 33 =
769
2
|
15.
42 + 751 =
2
793
|
16.
848 + 38 =
2
886
|
|
17.
738 – 284 =
2
454
|
18.
780 – 102 =
2
678
|
19.
52 + 542 =
2
594
|
20.
533 + 315 =
848
2
|