Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
559 – 131 =
2
428
|
2.
43 + 118 =
161
2
|
3.
468 – 416 =
52
2
|
4.
500 – 278 =
222
2
|
|
5.
560 + 220 =
780
2
|
6.
318 + 535 =
2
853
|
7.
363 + 302 =
2
665
|
8.
162 – 51 =
111
2
|
|
9.
620 + 206 =
826
2
|
10.
206 + 778 =
984
2
|
11.
491 + 405 =
896
2
|
12.
737 + 9 =
2
746
|
|
13.
561 + 76 =
2
637
|
14.
772 – 493 =
2
279
|
15.
743 + 19 =
762
2
|
16.
908 + 22 =
930
2
|
|
17.
715 – 286 =
2
429
|
18.
196 – 127 =
2
69
|
19.
308 + 656 =
964
2
|
20.
537 + 137 =
674
2
|