Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
252 + 440 =
692
2
|
2.
116 + 312 =
428
2
|
3.
502 + 447 =
2
949
|
4.
742 – 3 =
739
2
|
|
5.
803 + 171 =
2
974
|
6.
244 – 213 =
31
2
|
7.
389 – 93 =
2
296
|
8.
384 – 381 =
1
3
|
|
9.
718 – 131 =
587
2
|
10.
364 + 263 =
2
627
|
11.
418 + 106 =
524
2
|
12.
9 – 0 =
9
1
|
|
13.
443 + 230 =
673
2
|
14.
57 – 39 =
2
18
|
15.
43 + 285 =
328
2
|
16.
990 + 0 =
990
2
|
|
17.
836 + 69 =
2
905
|
18.
483 + 504 =
2
987
|
19.
116 – 83 =
2
33
|
20.
788 + 160 =
2
948
|