Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
339 + 10 =
349
2
|
2.
361 – 275 =
86
2
|
3.
690 + 53 =
743
2
|
4.
756 – 587 =
2
169
|
|
5.
470 + 477 =
2
947
|
6.
849 + 93 =
2
942
|
7.
329 – 265 =
2
64
|
8.
911 + 29 =
940
2
|
|
9.
10 – 6 =
4
1
|
10.
968 – 135 =
833
2
|
11.
288 + 688 =
976
2
|
12.
668 – 521 =
2
147
|
|
13.
903 + 2 =
905
2
|
14.
127 + 231 =
358
2
|
15.
889 – 247 =
642
2
|
16.
299 + 552 =
2
851
|
|
17.
211 + 221 =
2
432
|
18.
160 + 539 =
2
699
|
19.
255 + 698 =
2
953
|
20.
938 + 36 =
974
2
|