Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
880 – 663 =
217
2
|
2.
936 – 597 =
339
2
|
3.
844 + 131 =
2
975
|
4.
32 + 260 =
2
292
|
|
5.
236 + 417 =
653
2
|
6.
772 + 157 =
2
929
|
7.
888 – 4 =
884
2
|
8.
897 – 405 =
492
2
|
|
9.
793 + 152 =
945
2
|
10.
803 – 61 =
742
2
|
11.
804 + 49 =
2
853
|
12.
213 – 96 =
117
2
|
|
13.
769 – 691 =
78
2
|
14.
982 – 884 =
98
2
|
15.
929 + 18 =
2
947
|
16.
587 – 298 =
2
289
|
|
17.
288 – 154 =
134
2
|
18.
475 – 97 =
2
378
|
19.
984 + 13 =
2
997
|
20.
717 – 564 =
153
2
|