Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
184 – 29 =
2
155
|
2.
857 + 137 =
2
994
|
3.
623 + 129 =
752
2
|
4.
357 – 311 =
46
2
|
|
5.
872 + 23 =
895
2
|
6.
317 – 122 =
2
195
|
7.
700 – 171 =
2
529
|
8.
227 – 50 =
177
2
|
|
9.
927 – 145 =
2
782
|
10.
39 + 447 =
2
486
|
11.
407 + 508 =
915
2
|
12.
426 – 350 =
76
2
|
|
13.
80 – 44 =
2
36
|
14.
878 + 120 =
2
998
|
15.
167 – 71 =
96
2
|
16.
691 – 165 =
526
2
|
|
17.
916 + 13 =
2
929
|
18.
267 + 217 =
2
484
|
19.
714 – 92 =
622
2
|
20.
281 + 643 =
924
2
|