Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
368 – 37 =
2
331
|
2.
989 + 4 =
993
2
|
3.
122 – 121 =
1
2
|
4.
290 + 94 =
384
2
|
|
5.
406 + 590 =
996
2
|
6.
715 – 605 =
2
110
|
7.
764 + 110 =
874
2
|
8.
428 + 358 =
2
786
|
|
9.
136 – 81 =
55
2
|
10.
503 + 184 =
2
687
|
11.
398 + 518 =
2
916
|
12.
198 – 173 =
2
25
|
|
13.
133 + 68 =
201
2
|
14.
251 – 164 =
2
87
|
15.
505 – 389 =
2
116
|
16.
37 – 2 =
2
35
|
|
17.
838 + 59 =
2
897
|
18.
459 – 450 =
9
1
|
19.
54 – 32 =
2
22
|
20.
770 – 698 =
2
72
|