Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
108 – 46 =
2
62
|
2.
705 – 108 =
2
597
|
3.
129 + 586 =
715
2
|
4.
989 + 8 =
2
997
|
|
5.
402 – 283 =
119
2
|
6.
388 + 559 =
2
947
|
7.
968 – 356 =
612
2
|
8.
531 – 253 =
2
278
|
|
9.
431 – 249 =
182
2
|
10.
64 + 852 =
916
2
|
11.
236 + 391 =
2
627
|
12.
431 – 126 =
2
305
|
|
13.
751 + 117 =
868
2
|
14.
705 – 492 =
2
213
|
15.
614 + 70 =
684
2
|
16.
727 + 192 =
919
2
|
|
17.
515 – 136 =
379
2
|
18.
926 + 53 =
2
979
|
19.
30 + 302 =
332
2
|
20.
139 – 115 =
2
24
|