Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
599 + 238 =
2
837
|
2.
707 – 224 =
2
483
|
3.
256 + 618 =
874
2
|
4.
434 – 23 =
2
411
|
|
5.
428 – 172 =
256
2
|
6.
153 + 666 =
2
819
|
7.
81 + 82 =
2
163
|
8.
312 + 414 =
2
726
|
|
9.
946 + 20 =
966
2
|
10.
627 + 347 =
974
2
|
11.
950 + 29 =
2
979
|
12.
52 – 11 =
41
2
|
|
13.
914 + 36 =
2
950
|
14.
416 – 261 =
155
2
|
15.
135 – 63 =
2
72
|
16.
552 – 405 =
147
2
|
|
17.
726 + 240 =
966
2
|
18.
148 + 39 =
187
2
|
19.
349 – 258 =
2
91
|
20.
243 + 115 =
2
358
|