Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
682 – 257 =
2
425
|
2.
957 + 38 =
995
2
|
3.
440 – 411 =
29
2
|
4.
395 – 155 =
2
240
|
|
5.
51 – 22 =
29
2
|
6.
28 – 12 =
16
2
|
7.
391 – 78 =
2
313
|
8.
837 + 82 =
2
919
|
|
9.
727 – 219 =
508
2
|
10.
255 – 183 =
2
72
|
11.
307 + 350 =
657
2
|
12.
729 + 99 =
828
2
|
|
13.
821 + 81 =
902
2
|
14.
699 – 522 =
177
2
|
15.
992 – 12 =
980
2
|
16.
976 – 953 =
23
2
|
|
17.
255 – 168 =
87
2
|
18.
328 – 6 =
322
2
|
19.
836 + 45 =
2
881
|
20.
8 – 5 =
3
1
|