Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
59 – 36 =
23
2
|
2.
899 + 68 =
2
967
|
3.
413 – 176 =
2
237
|
4.
568 + 296 =
864
2
|
|
5.
533 + 180 =
713
2
|
6.
817 + 43 =
860
2
|
7.
61 + 225 =
286
2
|
8.
140 + 238 =
2
378
|
|
9.
881 + 2 =
2
883
|
10.
269 – 38 =
2
231
|
11.
106 – 64 =
42
2
|
12.
317 – 138 =
179
2
|
|
13.
524 – 401 =
2
123
|
14.
486 + 475 =
961
2
|
15.
977 + 11 =
988
2
|
16.
733 – 200 =
2
533
|
|
17.
631 – 473 =
2
158
|
18.
272 + 233 =
2
505
|
19.
324 – 65 =
2
259
|
20.
329 – 215 =
2
114
|