Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
432 – 214 =
2
218
|
2.
508 – 21 =
2
487
|
3.
678 + 318 =
2
996
|
4.
579 + 26 =
605
2
|
|
5.
478 – 111 =
367
2
|
6.
209 + 26 =
235
2
|
7.
411 + 131 =
542
2
|
8.
855 + 47 =
2
902
|
|
9.
367 – 254 =
2
113
|
10.
732 + 24 =
756
2
|
11.
452 + 76 =
528
2
|
12.
838 – 619 =
219
2
|
|
13.
436 – 354 =
82
2
|
14.
10 – 5 =
5
1
|
15.
475 – 333 =
2
142
|
16.
368 + 156 =
2
524
|
|
17.
619 + 239 =
2
858
|
18.
685 – 328 =
2
357
|
19.
148 – 121 =
27
2
|
20.
992 – 961 =
2
31
|