Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
357 – 326 =
31
2
|
2.
466 + 119 =
585
2
|
3.
599 + 46 =
2
645
|
4.
782 + 174 =
2
956
|
|
5.
337 – 25 =
2
312
|
6.
715 – 349 =
2
366
|
7.
767 + 190 =
957
2
|
8.
622 – 399 =
223
2
|
|
9.
372 + 221 =
593
2
|
10.
823 – 756 =
67
2
|
11.
776 – 303 =
2
473
|
12.
871 – 526 =
2
345
|
|
13.
627 – 25 =
2
602
|
14.
892 + 107 =
2
999
|
15.
143 + 240 =
383
2
|
16.
24 + 465 =
2
489
|
|
17.
896 – 33 =
2
863
|
18.
509 – 492 =
2
17
|
19.
305 + 465 =
2
770
|
20.
485 – 159 =
2
326
|