Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
600 – 231 =
369
2
|
2.
989 – 929 =
60
2
|
3.
684 + 266 =
2
950
|
4.
141 – 101 =
40
2
|
|
5.
588 + 292 =
2
880
|
6.
618 + 299 =
917
2
|
7.
514 + 423 =
2
937
|
8.
549 – 485 =
64
2
|
|
9.
442 – 397 =
2
45
|
10.
347 – 319 =
28
2
|
11.
761 + 182 =
2
943
|
12.
320 + 558 =
2
878
|
|
13.
747 – 154 =
2
593
|
14.
290 + 276 =
2
566
|
15.
96 + 667 =
763
2
|
16.
650 – 101 =
549
2
|
|
17.
757 + 87 =
2
844
|
18.
923 + 9 =
2
932
|
19.
50 – 22 =
2
28
|
20.
368 + 555 =
923
2
|