Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
720 + 199 =
919
2
|
2.
878 + 63 =
2
941
|
3.
825 – 824 =
2
1
|
4.
406 + 314 =
2
720
|
|
5.
479 + 198 =
2
677
|
6.
436 – 376 =
60
2
|
7.
308 + 435 =
743
2
|
8.
872 – 12 =
2
860
|
|
9.
617 + 20 =
637
2
|
10.
79 + 534 =
613
2
|
11.
338 + 433 =
2
771
|
12.
989 + 3 =
992
2
|
|
13.
971 – 282 =
2
689
|
14.
998 – 109 =
2
889
|
15.
240 + 682 =
922
2
|
16.
652 – 234 =
2
418
|
|
17.
908 – 71 =
2
837
|
18.
633 + 364 =
2
997
|
19.
614 + 143 =
2
757
|
20.
137 + 443 =
2
580
|