Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
9 – 3 =
6
1
|
2.
339 – 3 =
2
336
|
3.
312 + 269 =
581
2
|
4.
635 + 354 =
2
989
|
|
5.
342 – 300 =
2
42
|
6.
410 + 404 =
2
814
|
7.
927 – 17 =
910
2
|
8.
923 + 41 =
964
2
|
|
9.
244 + 665 =
909
2
|
10.
439 + 66 =
2
505
|
11.
835 + 58 =
2
893
|
12.
631 + 203 =
834
2
|
|
13.
419 + 156 =
2
575
|
14.
196 – 132 =
64
2
|
15.
17 – 0 =
2
17
|
16.
797 – 610 =
2
187
|
|
17.
570 + 139 =
2
709
|
18.
651 + 74 =
725
2
|
19.
794 – 330 =
464
2
|
20.
333 + 528 =
861
2
|