Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
787 + 61 =
848
2
|
2.
501 + 171 =
672
2
|
3.
279 + 706 =
985
2
|
4.
68 + 759 =
2
827
|
|
5.
867 + 5 =
872
2
|
6.
175 + 22 =
197
2
|
7.
31 + 942 =
973
2
|
8.
427 + 98 =
2
525
|
|
9.
176 + 364 =
2
540
|
10.
930 + 20 =
2
950
|
11.
569 – 93 =
2
476
|
12.
77 + 815 =
2
892
|
|
13.
830 – 698 =
132
2
|
14.
534 – 295 =
2
239
|
15.
919 – 524 =
395
2
|
16.
423 + 495 =
2
918
|
|
17.
39 + 109 =
2
148
|
18.
742 – 14 =
2
728
|
19.
636 – 429 =
2
207
|
20.
133 + 530 =
2
663
|