Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
108 – 23 =
2
85
|
2.
699 – 232 =
467
2
|
3.
798 + 87 =
2
885
|
4.
545 + 279 =
2
824
|
|
5.
418 – 392 =
2
26
|
6.
347 – 176 =
2
171
|
7.
592 – 140 =
2
452
|
8.
917 – 733 =
184
2
|
|
9.
904 + 17 =
921
2
|
10.
887 + 99 =
2
986
|
11.
125 – 104 =
2
21
|
12.
52 + 501 =
2
553
|
|
13.
701 + 44 =
745
2
|
14.
165 – 38 =
2
127
|
15.
879 – 132 =
2
747
|
16.
595 – 537 =
58
2
|
|
17.
574 + 165 =
2
739
|
18.
277 – 77 =
200
2
|
19.
603 – 194 =
409
2
|
20.
317 + 505 =
2
822
|