Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
894 – 584 =
2
310
|
2.
264 – 111 =
2
153
|
3.
203 – 6 =
197
2
|
4.
829 – 1 =
2
828
|
|
5.
717 – 357 =
2
360
|
6.
371 – 52 =
2
319
|
7.
301 – 248 =
53
2
|
8.
832 + 35 =
2
867
|
|
9.
847 – 334 =
2
513
|
10.
481 + 96 =
577
2
|
11.
441 – 348 =
2
93
|
12.
498 – 151 =
347
2
|
|
13.
4 + 297 =
2
301
|
14.
102 + 372 =
2
474
|
15.
35 – 35 =
2
0
|
16.
826 – 762 =
2
64
|
|
17.
237 + 243 =
2
480
|
18.
453 + 158 =
611
2
|
19.
81 + 13 =
94
2
|
20.
514 + 378 =
2
892
|