Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
189 + 488 =
2
677
|
2.
526 – 523 =
3
1
|
3.
531 – 433 =
98
2
|
4.
65 + 157 =
2
222
|
|
5.
23 + 481 =
504
2
|
6.
833 + 60 =
2
893
|
7.
3 – 2 =
2
1
|
8.
659 + 275 =
2
934
|
|
9.
44 + 245 =
2
289
|
10.
177 – 26 =
2
151
|
11.
610 + 370 =
2
980
|
12.
330 – 329 =
1
2
|
|
13.
829 – 122 =
707
2
|
14.
468 + 520 =
2
988
|
15.
29 + 487 =
516
2
|
16.
419 – 94 =
325
2
|
|
17.
896 – 831 =
2
65
|
18.
640 + 258 =
2
898
|
19.
777 + 185 =
962
2
|
20.
261 – 180 =
2
81
|