Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
733 + 82 =
2
815
|
2.
23 – 19 =
1
4
|
3.
252 – 21 =
231
2
|
4.
306 + 418 =
2
724
|
|
5.
755 – 663 =
92
2
|
6.
623 – 566 =
2
57
|
7.
677 – 194 =
2
483
|
8.
456 + 233 =
2
689
|
|
9.
109 + 741 =
2
850
|
10.
292 + 342 =
634
2
|
11.
566 + 52 =
618
2
|
12.
136 – 38 =
2
98
|
|
13.
118 + 876 =
994
2
|
14.
426 – 281 =
2
145
|
15.
684 + 26 =
710
2
|
16.
997 + 0 =
997
2
|
|
17.
660 + 222 =
2
882
|
18.
405 – 344 =
61
2
|
19.
79 + 489 =
2
568
|
20.
516 + 326 =
842
2
|