Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
867 + 109 =
2
976
|
2.
922 + 25 =
2
947
|
3.
868 – 443 =
425
2
|
4.
34 + 578 =
612
2
|
|
5.
485 – 306 =
2
179
|
6.
490 – 49 =
441
2
|
7.
460 + 485 =
2
945
|
8.
420 + 35 =
455
2
|
|
9.
157 – 146 =
11
1
|
10.
92 – 32 =
60
2
|
11.
788 – 389 =
2
399
|
12.
66 – 51 =
15
1
|
|
13.
641 – 451 =
2
190
|
14.
622 + 84 =
706
2
|
15.
841 – 520 =
321
2
|
16.
501 – 269 =
232
2
|
|
17.
442 – 308 =
2
134
|
18.
295 – 175 =
120
2
|
19.
402 + 376 =
778
2
|
20.
577 + 362 =
939
2
|