Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
468 – 169 =
2
299
|
2.
89 + 12 =
2
101
|
3.
713 – 155 =
558
2
|
4.
375 – 311 =
2
64
|
|
5.
906 + 65 =
2
971
|
6.
294 – 206 =
88
2
|
7.
986 – 684 =
302
2
|
8.
56 + 803 =
2
859
|
|
9.
991 – 873 =
118
2
|
10.
80 + 255 =
2
335
|
11.
808 – 637 =
2
171
|
12.
488 – 426 =
62
2
|
|
13.
850 + 61 =
911
2
|
14.
395 – 156 =
239
2
|
15.
126 – 70 =
2
56
|
16.
75 + 740 =
815
2
|
|
17.
481 + 248 =
2
729
|
18.
548 + 284 =
832
2
|
19.
438 + 333 =
2
771
|
20.
751 + 137 =
2
888
|