Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
698 – 609 =
89
2
|
2.
114 + 588 =
702
2
|
3.
485 – 427 =
58
2
|
4.
485 + 211 =
2
696
|
|
5.
801 – 398 =
2
403
|
6.
590 – 428 =
2
162
|
7.
375 + 286 =
661
2
|
8.
921 – 63 =
2
858
|
|
9.
907 + 54 =
961
2
|
10.
859 – 744 =
2
115
|
11.
755 + 7 =
762
2
|
12.
575 + 89 =
664
2
|
|
13.
397 + 173 =
570
2
|
14.
37 – 4 =
33
2
|
15.
982 + 3 =
985
2
|
16.
674 + 295 =
969
2
|
|
17.
560 + 45 =
605
2
|
18.
694 + 289 =
2
983
|
19.
662 – 536 =
2
126
|
20.
12 + 298 =
2
310
|