Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
548 – 302 =
2
246
|
2.
615 – 562 =
53
2
|
3.
674 – 356 =
2
318
|
4.
514 – 55 =
459
2
|
|
5.
156 + 594 =
2
750
|
6.
733 + 28 =
761
2
|
7.
747 + 88 =
2
835
|
8.
989 + 1 =
990
2
|
|
9.
785 + 184 =
2
969
|
10.
958 – 24 =
934
2
|
11.
747 + 168 =
915
2
|
12.
168 + 826 =
994
2
|
|
13.
996 + 0 =
2
996
|
14.
418 + 396 =
814
2
|
15.
506 + 304 =
2
810
|
16.
577 + 253 =
830
2
|
|
17.
606 – 137 =
469
2
|
18.
825 + 82 =
2
907
|
19.
411 – 275 =
2
136
|
20.
188 + 92 =
2
280
|