Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
944 – 107 =
837
2
|
2.
362 + 109 =
471
2
|
3.
719 + 182 =
2
901
|
4.
736 + 12 =
2
748
|
|
5.
31 + 698 =
2
729
|
6.
134 + 645 =
2
779
|
7.
615 + 219 =
2
834
|
8.
657 – 638 =
19
2
|
|
9.
562 – 1 =
2
561
|
10.
692 + 144 =
2
836
|
11.
589 + 267 =
2
856
|
12.
138 – 129 =
9
1
|
|
13.
165 + 414 =
579
2
|
14.
227 – 209 =
2
18
|
15.
388 – 102 =
2
286
|
16.
139 – 5 =
134
2
|
|
17.
263 – 94 =
169
2
|
18.
372 + 18 =
2
390
|
19.
425 – 419 =
1
6
|
20.
696 – 101 =
595
2
|