Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
197 – 41 =
2
156
|
2.
12 + 902 =
2
914
|
3.
193 + 445 =
2
638
|
4.
59 – 4 =
2
55
|
|
5.
234 – 14 =
2
220
|
6.
860 + 39 =
2
899
|
7.
132 – 63 =
69
2
|
8.
911 + 50 =
2
961
|
|
9.
170 – 61 =
109
2
|
10.
504 – 326 =
2
178
|
11.
245 – 153 =
92
2
|
12.
377 – 172 =
205
2
|
|
13.
27 + 893 =
920
2
|
14.
853 – 399 =
2
454
|
15.
475 + 368 =
2
843
|
16.
103 + 320 =
2
423
|
|
17.
664 + 209 =
873
2
|
18.
429 + 555 =
984
2
|
19.
837 – 704 =
133
2
|
20.
45 + 637 =
2
682
|