Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
276 + 673 =
2
949
|
2.
939 + 15 =
954
2
|
3.
615 – 502 =
113
2
|
4.
968 – 290 =
678
2
|
|
5.
441 + 240 =
681
2
|
6.
102 – 7 =
2
95
|
7.
851 – 288 =
563
2
|
8.
851 – 592 =
2
259
|
|
9.
81 – 6 =
75
2
|
10.
874 + 96 =
2
970
|
11.
451 – 84 =
367
2
|
12.
56 – 28 =
2
28
|
|
13.
707 – 487 =
220
2
|
14.
43 – 42 =
2
1
|
15.
908 – 82 =
826
2
|
16.
512 – 359 =
153
2
|
|
17.
958 + 32 =
990
2
|
18.
166 – 78 =
88
2
|
19.
486 – 461 =
25
2
|
20.
638 + 106 =
2
744
|