Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
263 – 70 =
2
193
|
2.
38 – 34 =
4
1
|
3.
47 – 47 =
0
2
|
4.
228 + 675 =
2
903
|
|
5.
221 – 117 =
104
2
|
6.
917 + 3 =
920
2
|
7.
399 + 78 =
2
477
|
8.
830 + 116 =
2
946
|
|
9.
556 – 123 =
2
433
|
10.
185 – 174 =
11
1
|
11.
555 – 212 =
2
343
|
12.
886 + 76 =
2
962
|
|
13.
198 – 135 =
2
63
|
14.
879 + 16 =
895
2
|
15.
887 + 80 =
967
2
|
16.
965 + 34 =
999
2
|
|
17.
276 + 538 =
814
2
|
18.
324 – 185 =
2
139
|
19.
954 + 20 =
2
974
|
20.
558 + 193 =
2
751
|