Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
772 – 428 =
344
2
|
2.
128 + 414 =
2
542
|
3.
398 – 348 =
50
2
|
4.
47 + 731 =
778
2
|
|
5.
183 – 87 =
2
96
|
6.
994 + 2 =
996
2
|
7.
802 – 298 =
2
504
|
8.
227 + 306 =
533
2
|
|
9.
906 – 358 =
2
548
|
10.
85 + 148 =
233
2
|
11.
192 + 555 =
2
747
|
12.
569 – 166 =
2
403
|
|
13.
62 – 56 =
6
1
|
14.
421 – 186 =
235
2
|
15.
352 + 321 =
673
2
|
16.
866 + 116 =
2
982
|
|
17.
362 + 463 =
2
825
|
18.
210 + 192 =
402
2
|
19.
768 + 41 =
809
2
|
20.
32 – 18 =
1
14
|