Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
631 – 135 =
496
2
|
2.
4 – 4 =
0
2
|
3.
786 + 7 =
793
2
|
4.
742 + 120 =
862
2
|
|
5.
270 + 444 =
2
714
|
6.
366 + 151 =
2
517
|
7.
762 – 152 =
2
610
|
8.
366 + 334 =
700
2
|
|
9.
418 – 129 =
2
289
|
10.
73 + 268 =
2
341
|
11.
461 – 394 =
2
67
|
12.
206 + 613 =
2
819
|
|
13.
224 – 146 =
78
2
|
14.
1000 + 0 =
1000
2
|
15.
567 – 430 =
137
2
|
16.
61 – 60 =
2
1
|
|
17.
739 – 220 =
519
2
|
18.
777 + 177 =
2
954
|
19.
340 – 109 =
2
231
|
20.
361 + 44 =
2
405
|