Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
76 – 71 =
1
5
|
2.
868 + 65 =
933
2
|
3.
481 + 42 =
523
2
|
4.
261 – 67 =
2
194
|
|
5.
824 + 85 =
2
909
|
6.
927 + 12 =
2
939
|
7.
943 – 85 =
2
858
|
8.
298 – 105 =
193
2
|
|
9.
92 – 29 =
63
2
|
10.
365 – 37 =
2
328
|
11.
470 + 412 =
2
882
|
12.
569 + 232 =
2
801
|
|
13.
254 – 72 =
182
2
|
14.
169 – 31 =
2
138
|
15.
284 + 45 =
329
2
|
16.
654 – 370 =
284
2
|
|
17.
965 + 18 =
983
2
|
18.
770 + 58 =
2
828
|
19.
561 + 169 =
730
2
|
20.
331 + 321 =
2
652
|