Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
311 – 66 =
2
245
|
2.
644 – 164 =
480
2
|
3.
905 – 446 =
459
2
|
4.
114 – 74 =
2
40
|
|
5.
373 – 159 =
2
214
|
6.
165 + 635 =
2
800
|
7.
622 + 71 =
2
693
|
8.
715 + 61 =
776
2
|
|
9.
604 – 404 =
200
2
|
10.
478 + 360 =
2
838
|
11.
405 + 167 =
572
2
|
12.
111 + 718 =
829
2
|
|
13.
959 + 38 =
2
997
|
14.
460 + 56 =
2
516
|
15.
198 + 409 =
2
607
|
16.
970 + 15 =
985
2
|
|
17.
171 + 617 =
788
2
|
18.
806 + 92 =
2
898
|
19.
995 – 560 =
2
435
|
20.
201 – 4 =
197
2
|