Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
589 + 381 =
970
2
|
2.
624 – 384 =
240
2
|
3.
12 – 5 =
1
7
|
4.
473 + 299 =
2
772
|
|
5.
104 – 99 =
1
5
|
6.
477 + 336 =
2
813
|
7.
907 + 39 =
2
946
|
8.
490 + 263 =
753
2
|
|
9.
91 + 538 =
2
629
|
10.
684 + 30 =
714
2
|
11.
245 – 131 =
114
2
|
12.
901 + 58 =
959
2
|
|
13.
835 – 512 =
323
2
|
14.
655 – 304 =
2
351
|
15.
247 + 478 =
2
725
|
16.
724 – 218 =
2
506
|
|
17.
109 + 97 =
2
206
|
18.
689 + 196 =
2
885
|
19.
743 + 78 =
2
821
|
20.
608 – 318 =
2
290
|