Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
328 – 132 =
2
196
|
2.
749 – 408 =
341
2
|
3.
268 + 88 =
2
356
|
4.
534 – 84 =
450
2
|
|
5.
373 + 29 =
2
402
|
6.
475 – 370 =
105
2
|
7.
202 + 283 =
2
485
|
8.
869 + 91 =
2
960
|
|
9.
955 – 829 =
2
126
|
10.
922 – 765 =
157
2
|
11.
444 – 429 =
15
1
|
12.
388 + 500 =
2
888
|
|
13.
934 – 382 =
2
552
|
14.
39 – 21 =
18
2
|
15.
523 + 230 =
753
2
|
16.
510 – 14 =
2
496
|
|
17.
233 – 127 =
106
2
|
18.
903 + 95 =
998
2
|
19.
290 – 270 =
20
2
|
20.
63 + 705 =
768
2
|