Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
319 + 494 =
2
813
|
2.
462 + 252 =
714
2
|
3.
462 + 438 =
2
900
|
4.
140 – 113 =
2
27
|
|
5.
25 + 49 =
74
2
|
6.
530 + 80 =
610
2
|
7.
637 – 7 =
630
2
|
8.
884 – 821 =
2
63
|
|
9.
617 – 175 =
2
442
|
10.
64 + 867 =
931
2
|
11.
140 + 292 =
432
2
|
12.
304 – 191 =
2
113
|
|
13.
651 + 200 =
851
2
|
14.
521 + 161 =
2
682
|
15.
685 – 171 =
2
514
|
16.
648 + 333 =
981
2
|
|
17.
239 + 424 =
2
663
|
18.
755 – 166 =
589
2
|
19.
833 – 102 =
2
731
|
20.
170 + 476 =
2
646
|