Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
506 – 242 =
264
2
|
2.
366 – 185 =
181
2
|
3.
151 + 813 =
964
2
|
4.
101 + 544 =
2
645
|
|
5.
267 – 37 =
230
2
|
6.
299 – 219 =
80
2
|
7.
366 + 34 =
400
2
|
8.
834 – 18 =
2
816
|
|
9.
331 + 10 =
341
2
|
10.
763 + 144 =
907
2
|
11.
89 – 87 =
2
1
|
12.
29 + 157 =
186
2
|
|
13.
380 + 586 =
966
2
|
14.
371 + 167 =
538
2
|
15.
85 + 883 =
968
2
|
16.
288 + 526 =
2
814
|
|
17.
618 – 562 =
2
56
|
18.
992 + 2 =
994
2
|
19.
649 – 637 =
1
12
|
20.
480 – 312 =
2
168
|