Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
280 + 677 =
957
2
|
2.
976 + 3 =
2
979
|
3.
32 – 20 =
1
12
|
4.
203 + 103 =
306
2
|
|
5.
327 – 0 =
2
327
|
6.
247 – 203 =
44
2
|
7.
545 + 416 =
961
2
|
8.
131 + 401 =
532
2
|
|
9.
24 + 100 =
124
2
|
10.
171 + 482 =
653
2
|
11.
858 + 39 =
2
897
|
12.
41 – 41 =
0
2
|
|
13.
281 + 45 =
2
326
|
14.
479 – 355 =
2
124
|
15.
23 – 23 =
0
2
|
16.
534 – 136 =
2
398
|
|
17.
342 + 73 =
415
2
|
18.
123 + 474 =
2
597
|
19.
48 + 674 =
2
722
|
20.
225 + 604 =
2
829
|