Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
268 + 216 =
484
2
|
2.
357 – 78 =
2
279
|
3.
229 + 46 =
2
275
|
4.
827 + 61 =
888
2
|
|
5.
702 – 609 =
2
93
|
6.
174 + 479 =
2
653
|
7.
401 – 68 =
2
333
|
8.
150 – 91 =
2
59
|
|
9.
394 – 313 =
81
2
|
10.
958 – 519 =
439
2
|
11.
240 + 274 =
514
2
|
12.
612 – 584 =
2
28
|
|
13.
353 + 620 =
973
2
|
14.
117 + 845 =
962
2
|
15.
759 – 650 =
2
109
|
16.
779 + 112 =
891
2
|
|
17.
635 – 368 =
2
267
|
18.
555 – 509 =
2
46
|
19.
877 – 666 =
2
211
|
20.
912 – 712 =
200
2
|