Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
435 + 257 =
692
2
|
2.
111 – 2 =
2
109
|
3.
179 + 116 =
2
295
|
4.
411 – 345 =
66
2
|
|
5.
522 + 145 =
667
2
|
6.
362 – 145 =
217
2
|
7.
772 + 183 =
2
955
|
8.
588 + 351 =
939
2
|
|
9.
863 + 104 =
967
2
|
10.
268 + 426 =
2
694
|
11.
483 + 423 =
2
906
|
12.
224 – 192 =
2
32
|
|
13.
290 – 133 =
157
2
|
14.
647 – 413 =
234
2
|
15.
298 – 285 =
13
1
|
16.
547 – 13 =
534
2
|
|
17.
983 – 156 =
2
827
|
18.
900 – 568 =
2
332
|
19.
844 – 224 =
2
620
|
20.
114 + 224 =
2
338
|