Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
879 – 742 =
2
137
|
2.
734 – 358 =
376
2
|
3.
757 – 122 =
2
635
|
4.
300 – 265 =
35
2
|
|
5.
817 + 154 =
971
2
|
6.
375 + 586 =
961
2
|
7.
305 + 493 =
2
798
|
8.
66 – 8 =
58
2
|
|
9.
5 – 1 =
4
1
|
10.
916 – 414 =
502
2
|
11.
416 – 119 =
297
2
|
12.
18 + 599 =
2
617
|
|
13.
388 – 372 =
16
2
|
14.
695 – 394 =
2
301
|
15.
766 + 225 =
2
991
|
16.
456 + 25 =
481
2
|
|
17.
325 – 200 =
125
2
|
18.
333 + 378 =
711
2
|
19.
824 – 612 =
212
2
|
20.
285 – 17 =
268
2
|