Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
698 – 196 =
502
2
|
2.
278 – 276 =
2
1
|
3.
123 + 15 =
138
2
|
4.
597 + 215 =
812
2
|
|
5.
600 + 319 =
2
919
|
6.
467 + 32 =
499
2
|
7.
948 – 419 =
2
529
|
8.
389 – 227 =
2
162
|
|
9.
974 + 23 =
2
997
|
10.
717 – 74 =
2
643
|
11.
447 + 333 =
2
780
|
12.
167 – 28 =
2
139
|
|
13.
209 – 101 =
108
2
|
14.
481 – 235 =
2
246
|
15.
99 – 41 =
2
58
|
16.
464 + 350 =
2
814
|
|
17.
510 + 138 =
648
2
|
18.
770 – 415 =
355
2
|
19.
897 + 93 =
2
990
|
20.
646 – 607 =
2
39
|