Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
371 – 315 =
56
2
|
2.
844 + 80 =
924
2
|
3.
486 – 252 =
234
2
|
4.
938 + 44 =
2
982
|
|
5.
665 + 283 =
2
948
|
6.
992 + 8 =
1000
2
|
7.
433 + 149 =
2
582
|
8.
383 + 19 =
402
2
|
|
9.
288 + 41 =
329
2
|
10.
762 – 531 =
231
2
|
11.
867 + 2 =
869
2
|
12.
491 – 395 =
2
96
|
|
13.
461 + 269 =
730
2
|
14.
929 + 71 =
2
1000
|
15.
538 + 386 =
924
2
|
16.
920 – 379 =
541
2
|
|
17.
277 – 133 =
144
2
|
18.
86 – 79 =
1
7
|
19.
674 – 93 =
2
581
|
20.
484 + 52 =
2
536
|