Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
366 – 97 =
269
2
|
2.
759 – 422 =
337
2
|
3.
876 – 489 =
2
387
|
4.
925 – 329 =
2
596
|
|
5.
322 – 27 =
2
295
|
6.
713 – 637 =
2
76
|
7.
735 + 76 =
2
811
|
8.
61 – 56 =
1
5
|
|
9.
729 + 170 =
2
899
|
10.
357 + 544 =
901
2
|
11.
324 – 253 =
2
71
|
12.
302 – 105 =
197
2
|
|
13.
339 + 136 =
2
475
|
14.
492 + 7 =
499
2
|
15.
997 – 382 =
2
615
|
16.
584 + 227 =
811
2
|
|
17.
826 + 135 =
2
961
|
18.
568 – 484 =
84
2
|
19.
312 – 245 =
2
67
|
20.
17 + 540 =
2
557
|