Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
598 + 43 =
641
2
|
2.
935 + 12 =
947
2
|
3.
862 + 81 =
943
2
|
4.
30 – 26 =
1
4
|
|
5.
543 – 473 =
70
2
|
6.
474 – 327 =
2
147
|
7.
130 + 3 =
133
2
|
8.
504 – 22 =
482
2
|
|
9.
57 – 48 =
1
9
|
10.
884 + 63 =
947
2
|
11.
685 – 397 =
288
2
|
12.
370 – 291 =
2
79
|
|
13.
450 + 440 =
890
2
|
14.
322 + 315 =
637
2
|
15.
709 + 228 =
2
937
|
16.
912 + 14 =
926
2
|
|
17.
458 + 102 =
560
2
|
18.
809 + 87 =
896
2
|
19.
729 – 363 =
2
366
|
20.
648 + 296 =
2
944
|