Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
316 + 559 =
875
2
|
2.
808 + 144 =
2
952
|
3.
522 + 295 =
817
2
|
4.
51 – 48 =
1
3
|
|
5.
413 – 356 =
57
2
|
6.
278 – 214 =
2
64
|
7.
491 + 465 =
2
956
|
8.
40 – 15 =
25
2
|
|
9.
258 + 661 =
919
2
|
10.
488 + 446 =
2
934
|
11.
251 – 45 =
206
2
|
12.
409 + 243 =
2
652
|
|
13.
240 – 51 =
2
189
|
14.
758 + 56 =
814
2
|
15.
751 – 654 =
2
97
|
16.
217 – 15 =
202
2
|
|
17.
227 + 508 =
735
2
|
18.
859 – 358 =
2
501
|
19.
988 + 1 =
989
2
|
20.
561 – 200 =
361
2
|