Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
228 – 101 =
127
2
|
2.
226 – 144 =
2
82
|
3.
168 – 22 =
146
2
|
4.
431 – 312 =
119
2
|
|
5.
958 – 177 =
781
2
|
6.
621 – 560 =
61
2
|
7.
741 + 189 =
2
930
|
8.
283 – 173 =
2
110
|
|
9.
423 – 230 =
2
193
|
10.
984 + 9 =
993
2
|
11.
564 – 424 =
140
2
|
12.
127 + 56 =
2
183
|
|
13.
352 – 88 =
2
264
|
14.
744 + 111 =
2
855
|
15.
490 – 123 =
2
367
|
16.
684 + 146 =
830
2
|
|
17.
812 – 11 =
2
801
|
18.
462 – 38 =
2
424
|
19.
662 – 174 =
488
2
|
20.
134 – 111 =
2
23
|