Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
209 + 626 =
835
2
|
2.
56 + 187 =
243
2
|
3.
811 – 237 =
574
2
|
4.
182 – 74 =
108
2
|
|
5.
901 + 76 =
977
2
|
6.
444 – 8 =
436
2
|
7.
439 – 0 =
2
439
|
8.
677 + 3 =
2
680
|
|
9.
553 – 137 =
2
416
|
10.
275 + 91 =
2
366
|
11.
78 + 603 =
681
2
|
12.
486 – 142 =
344
2
|
|
13.
622 – 365 =
257
2
|
14.
588 + 411 =
2
999
|
15.
842 + 148 =
2
990
|
16.
711 + 270 =
981
2
|
|
17.
669 + 128 =
2
797
|
18.
859 – 172 =
2
687
|
19.
464 – 130 =
334
2
|
20.
198 + 536 =
2
734
|