Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
266 – 62 =
2
204
|
2.
778 – 150 =
628
2
|
3.
82 + 899 =
981
2
|
4.
967 + 20 =
987
2
|
|
5.
173 + 603 =
776
2
|
6.
697 + 32 =
729
2
|
7.
565 + 139 =
2
704
|
8.
245 – 202 =
43
2
|
|
9.
988 + 6 =
994
2
|
10.
908 + 31 =
2
939
|
11.
226 + 400 =
2
626
|
12.
20 – 13 =
7
1
|
|
13.
232 – 9 =
2
223
|
14.
488 + 405 =
893
2
|
15.
575 – 216 =
2
359
|
16.
99 – 20 =
2
79
|
|
17.
728 + 197 =
925
2
|
18.
928 + 29 =
2
957
|
19.
691 + 214 =
2
905
|
20.
384 + 76 =
460
2
|