Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
667 + 323 =
990
2
|
2.
122 – 57 =
65
2
|
3.
875 – 547 =
2
328
|
4.
749 + 84 =
2
833
|
|
5.
168 – 148 =
2
20
|
6.
558 + 221 =
779
2
|
7.
127 – 102 =
2
25
|
8.
346 + 0 =
346
2
|
|
9.
718 + 271 =
989
2
|
10.
885 – 762 =
2
123
|
11.
335 – 128 =
2
207
|
12.
780 + 70 =
2
850
|
|
13.
547 + 131 =
678
2
|
14.
440 + 538 =
978
2
|
15.
803 – 522 =
2
281
|
16.
696 + 62 =
2
758
|
|
17.
485 – 109 =
376
2
|
18.
936 – 595 =
341
2
|
19.
195 + 500 =
2
695
|
20.
808 + 43 =
2
851
|