Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
884 + 26 =
910
2
|
2.
371 + 20 =
2
391
|
3.
714 + 139 =
2
853
|
4.
240 – 41 =
199
2
|
|
5.
675 – 560 =
115
2
|
6.
652 + 133 =
785
2
|
7.
479 + 267 =
2
746
|
8.
427 + 158 =
2
585
|
|
9.
830 – 684 =
2
146
|
10.
563 – 453 =
110
2
|
11.
796 + 109 =
905
2
|
12.
960 – 361 =
599
2
|
|
13.
289 + 398 =
687
2
|
14.
733 – 682 =
51
2
|
15.
593 + 368 =
2
961
|
16.
673 – 338 =
335
2
|
|
17.
791 + 71 =
862
2
|
18.
578 + 28 =
606
2
|
19.
11 – 1 =
1
10
|
20.
593 + 186 =
2
779
|