Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
123 + 673 =
2
796
|
2.
521 – 100 =
2
421
|
3.
334 + 488 =
2
822
|
4.
796 – 552 =
244
2
|
|
5.
424 + 137 =
561
2
|
6.
463 + 140 =
603
2
|
7.
902 – 579 =
2
323
|
8.
182 + 28 =
210
2
|
|
9.
374 + 144 =
518
2
|
10.
365 + 594 =
959
2
|
11.
199 + 221 =
2
420
|
12.
12 – 10 =
1
2
|
|
13.
517 – 342 =
2
175
|
14.
996 – 438 =
2
558
|
15.
788 – 315 =
473
2
|
16.
103 – 83 =
20
2
|
|
17.
580 + 147 =
727
2
|
18.
796 – 229 =
2
567
|
19.
711 – 197 =
514
2
|
20.
174 + 106 =
2
280
|