Reken de erbijsom en erafsom tot 1.000 uit
In de mix
|
1.
491 + 344 =
835
4
2
3
|
2.
105 + 376 =
481
3
4
2
|
3.
485 + 4 =
4
3
2
489
|
4.
323 + 626 =
949
2
3
4
|
|
5.
846 – 815 =
4
3
2
31
|
6.
310 + 246 =
2
3
556
4
|
7.
49 – 20 =
2
3
4
29
|
8.
380 + 504 =
3
884
2
4
|
|
9.
232 – 203 =
29
2
3
4
|
10.
729 – 648 =
3
2
81
4
|
11.
518 – 145 =
4
373
3
2
|
12.
80 + 28 =
108
3
4
2
|
|
13.
34 – 13 =
4
3
21
2
|
14.
385 + 228 =
4
2
613
3
|
15.
356 – 60 =
4
3
2
296
|
16.
569 – 219 =
350
3
4
2
|
|
17.
428 – 404 =
2
4
3
24
|
18.
684 + 11 =
4
695
2
3
|
19.
631 – 388 =
3
243
4
2
|
20.
507 – 177 =
3
4
2
330
|