Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
68 + 302 =
370
2
|
2.
819 – 210 =
609
2
|
3.
726 – 724 =
1
2
|
4.
404 – 21 =
2
383
|
|
5.
75 + 514 =
589
2
|
6.
330 – 72 =
258
2
|
7.
413 – 340 =
73
2
|
8.
472 – 198 =
2
274
|
|
9.
482 – 113 =
369
2
|
10.
354 + 22 =
2
376
|
11.
357 + 69 =
426
2
|
12.
686 + 62 =
748
2
|
|
13.
366 + 597 =
2
963
|
14.
254 – 208 =
46
2
|
15.
699 – 300 =
399
2
|
16.
112 – 38 =
2
74
|
|
17.
248 + 193 =
2
441
|
18.
778 – 769 =
9
1
|
19.
626 – 13 =
2
613
|
20.
865 – 654 =
211
2
|