Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
569 – 306 =
2
263
|
2.
378 + 554 =
2
932
|
3.
626 + 177 =
803
2
|
4.
677 + 206 =
2
883
|
|
5.
904 + 72 =
2
976
|
6.
656 + 280 =
2
936
|
7.
345 – 179 =
2
166
|
8.
679 – 441 =
238
2
|
|
9.
966 + 0 =
2
966
|
10.
982 + 1 =
983
2
|
11.
418 – 272 =
2
146
|
12.
67 + 239 =
2
306
|
|
13.
92 – 24 =
2
68
|
14.
308 – 61 =
247
2
|
15.
111 – 5 =
106
2
|
16.
72 + 480 =
2
552
|
|
17.
135 – 110 =
25
2
|
18.
607 + 168 =
2
775
|
19.
316 – 101 =
215
2
|
20.
777 – 68 =
2
709
|