Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
898 – 295 =
603
2
|
2.
454 – 311 =
2
143
|
3.
773 – 19 =
754
2
|
4.
263 – 43 =
2
220
|
|
5.
992 + 8 =
2
1000
|
6.
474 + 427 =
2
901
|
7.
807 – 739 =
2
68
|
8.
988 – 829 =
159
2
|
|
9.
85 + 317 =
402
2
|
10.
185 + 555 =
2
740
|
11.
766 – 169 =
2
597
|
12.
117 – 22 =
2
95
|
|
13.
646 + 207 =
853
2
|
14.
618 – 427 =
191
2
|
15.
366 – 149 =
2
217
|
16.
82 – 27 =
2
55
|
|
17.
286 – 10 =
276
2
|
18.
288 + 415 =
2
703
|
19.
40 – 29 =
1
11
|
20.
279 + 95 =
374
2
|