Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
842 – 128 =
2
714
|
2.
239 – 152 =
2
87
|
3.
261 + 6 =
267
2
|
4.
327 – 40 =
287
2
|
|
5.
364 – 169 =
195
2
|
6.
526 + 395 =
921
2
|
7.
194 – 32 =
162
2
|
8.
667 – 500 =
2
167
|
|
9.
320 – 94 =
226
2
|
10.
648 + 1 =
2
649
|
11.
354 – 71 =
2
283
|
12.
158 + 692 =
850
2
|
|
13.
366 + 633 =
2
999
|
14.
326 – 317 =
9
1
|
15.
477 – 142 =
335
2
|
16.
865 + 37 =
2
902
|
|
17.
824 + 150 =
974
2
|
18.
900 + 37 =
2
937
|
19.
849 + 7 =
856
2
|
20.
857 + 105 =
962
2
|