Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
788 – 594 =
2
194
|
2.
201 + 360 =
561
2
|
3.
456 + 246 =
702
2
|
4.
968 + 24 =
992
2
|
|
5.
179 – 35 =
144
2
|
6.
416 – 304 =
2
112
|
7.
616 + 93 =
709
2
|
8.
162 – 37 =
2
125
|
|
9.
71 + 400 =
471
2
|
10.
271 – 181 =
90
2
|
11.
170 – 101 =
2
69
|
12.
314 – 30 =
2
284
|
|
13.
648 + 99 =
2
747
|
14.
588 – 23 =
565
2
|
15.
396 – 51 =
2
345
|
16.
169 + 266 =
435
2
|
|
17.
712 – 200 =
2
512
|
18.
489 – 340 =
2
149
|
19.
696 + 51 =
2
747
|
20.
450 – 392 =
2
58
|