Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
156 + 21 =
177
2
|
2.
541 + 335 =
876
2
|
3.
826 + 120 =
2
946
|
4.
514 – 399 =
115
2
|
|
5.
824 + 101 =
2
925
|
6.
747 – 707 =
2
40
|
7.
448 + 355 =
2
803
|
8.
963 + 21 =
984
2
|
|
9.
402 – 17 =
2
385
|
10.
300 + 160 =
2
460
|
11.
739 – 633 =
106
2
|
12.
222 + 377 =
2
599
|
|
13.
740 – 675 =
2
65
|
14.
432 + 167 =
599
2
|
15.
775 – 631 =
2
144
|
16.
565 + 387 =
2
952
|
|
17.
686 + 28 =
714
2
|
18.
927 – 153 =
2
774
|
19.
611 – 537 =
74
2
|
20.
996 – 447 =
549
2
|