Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
950 + 31 =
2
981
|
2.
628 – 332 =
2
296
|
3.
727 – 314 =
2
413
|
4.
267 – 69 =
198
2
|
|
5.
341 – 340 =
1
2
|
6.
149 + 519 =
2
668
|
7.
257 – 64 =
193
2
|
8.
488 – 215 =
2
273
|
|
9.
364 + 424 =
788
2
|
10.
663 – 88 =
2
575
|
11.
622 + 10 =
632
2
|
12.
599 – 43 =
556
2
|
|
13.
364 + 44 =
2
408
|
14.
366 – 172 =
194
2
|
15.
833 – 524 =
309
2
|
16.
569 – 234 =
335
2
|
|
17.
814 – 467 =
347
2
|
18.
314 + 454 =
768
2
|
19.
96 – 77 =
2
19
|
20.
12 – 6 =
1
6
|