Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
154 + 363 =
517
2
|
2.
184 – 153 =
2
31
|
3.
420 + 505 =
925
2
|
4.
569 – 65 =
2
504
|
|
5.
884 + 51 =
2
935
|
6.
21 + 112 =
2
133
|
7.
219 – 61 =
158
2
|
8.
87 + 211 =
298
2
|
|
9.
488 – 227 =
2
261
|
10.
624 – 289 =
2
335
|
11.
641 – 549 =
92
2
|
12.
575 + 199 =
2
774
|
|
13.
221 – 166 =
2
55
|
14.
631 + 226 =
2
857
|
15.
246 + 290 =
2
536
|
16.
566 – 122 =
444
2
|
|
17.
67 – 23 =
2
44
|
18.
281 + 637 =
918
2
|
19.
586 – 291 =
295
2
|
20.
508 – 213 =
295
2
|