Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
463 + 362 =
2
825
|
2.
570 – 49 =
521
2
|
3.
263 + 63 =
2
326
|
4.
690 + 135 =
825
2
|
|
5.
509 – 447 =
62
2
|
6.
996 – 31 =
965
2
|
7.
521 – 385 =
2
136
|
8.
468 + 255 =
723
2
|
|
9.
243 – 185 =
2
58
|
10.
753 – 161 =
2
592
|
11.
659 + 71 =
730
2
|
12.
361 – 176 =
185
2
|
|
13.
386 – 339 =
47
2
|
14.
988 – 69 =
919
2
|
15.
194 – 41 =
2
153
|
16.
992 – 197 =
795
2
|
|
17.
197 + 57 =
254
2
|
18.
966 + 25 =
991
2
|
19.
718 – 367 =
2
351
|
20.
494 – 279 =
215
2
|