Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
745 – 438 =
307
2
|
2.
653 + 311 =
2
964
|
3.
52 – 2 =
2
50
|
4.
811 – 155 =
2
656
|
|
5.
960 + 30 =
2
990
|
6.
990 – 607 =
383
2
|
7.
741 + 173 =
2
914
|
8.
55 + 616 =
2
671
|
|
9.
668 + 93 =
761
2
|
10.
48 + 409 =
457
2
|
11.
621 + 373 =
994
2
|
12.
696 + 274 =
970
2
|
|
13.
280 + 535 =
2
815
|
14.
151 + 840 =
2
991
|
15.
167 – 33 =
2
134
|
16.
589 + 113 =
2
702
|
|
17.
617 – 29 =
588
2
|
18.
334 – 212 =
122
2
|
19.
506 – 55 =
2
451
|
20.
300 – 22 =
2
278
|