Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
255 + 214 =
469
2
|
2.
34 + 194 =
2
228
|
3.
635 + 107 =
2
742
|
4.
10 + 693 =
2
703
|
|
5.
413 – 232 =
181
2
|
6.
19 – 7 =
1
12
|
7.
288 + 642 =
2
930
|
8.
96 + 409 =
505
2
|
|
9.
923 + 57 =
980
2
|
10.
777 – 607 =
2
170
|
11.
254 + 539 =
793
2
|
12.
523 – 122 =
2
401
|
|
13.
975 – 933 =
42
2
|
14.
166 + 573 =
739
2
|
15.
176 + 783 =
2
959
|
16.
714 + 268 =
2
982
|
|
17.
173 – 90 =
83
2
|
18.
425 – 241 =
184
2
|
19.
990 + 1 =
991
2
|
20.
780 – 314 =
2
466
|