Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
144 + 12 =
156
2
|
2.
676 + 51 =
727
2
|
3.
418 + 559 =
2
977
|
4.
717 + 189 =
2
906
|
|
5.
843 – 696 =
2
147
|
6.
612 + 339 =
951
2
|
7.
197 + 109 =
306
2
|
8.
396 + 4 =
2
400
|
|
9.
97 – 18 =
79
2
|
10.
429 + 66 =
495
2
|
11.
447 + 212 =
2
659
|
12.
471 – 1 =
2
470
|
|
13.
59 + 65 =
124
2
|
14.
371 + 257 =
628
2
|
15.
860 + 130 =
2
990
|
16.
96 – 93 =
3
1
|
|
17.
816 – 410 =
406
2
|
18.
333 – 228 =
2
105
|
19.
318 + 111 =
2
429
|
20.
576 – 216 =
360
2
|