Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
608 + 284 =
892
2
|
2.
593 + 384 =
2
977
|
3.
731 + 152 =
883
2
|
4.
269 + 326 =
595
2
|
|
5.
91 + 329 =
2
420
|
6.
261 – 28 =
2
233
|
7.
679 + 235 =
914
2
|
8.
35 + 41 =
76
2
|
|
9.
35 – 33 =
1
2
|
10.
545 – 180 =
2
365
|
11.
796 + 130 =
926
2
|
12.
38 – 12 =
2
26
|
|
13.
658 + 249 =
907
2
|
14.
231 + 691 =
922
2
|
15.
931 + 40 =
2
971
|
16.
430 + 287 =
2
717
|
|
17.
240 – 113 =
127
2
|
18.
282 + 558 =
840
2
|
19.
684 + 197 =
2
881
|
20.
733 – 23 =
710
2
|