Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
503 – 146 =
2
357
|
2.
555 – 163 =
392
2
|
3.
927 – 211 =
716
2
|
4.
302 + 123 =
425
2
|
|
5.
522 – 139 =
383
2
|
6.
937 + 2 =
939
2
|
7.
535 + 362 =
2
897
|
8.
10 – 4 =
1
6
|
|
9.
653 + 101 =
754
2
|
10.
607 – 162 =
2
445
|
11.
884 – 860 =
2
24
|
12.
940 + 52 =
992
2
|
|
13.
987 + 13 =
2
1000
|
14.
53 + 216 =
269
2
|
15.
32 – 12 =
2
20
|
16.
254 + 31 =
2
285
|
|
17.
125 – 90 =
2
35
|
18.
701 + 242 =
2
943
|
19.
328 + 174 =
2
502
|
20.
116 + 663 =
2
779
|