Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
507 + 357 =
864
2
|
2.
28 + 807 =
835
2
|
3.
951 + 10 =
961
2
|
4.
929 + 6 =
2
935
|
|
5.
841 – 660 =
181
2
|
6.
832 – 575 =
2
257
|
7.
174 – 68 =
106
2
|
8.
116 – 37 =
79
2
|
|
9.
144 – 80 =
2
64
|
10.
423 + 553 =
2
976
|
11.
470 – 272 =
198
2
|
12.
983 + 3 =
2
986
|
|
13.
766 + 232 =
2
998
|
14.
447 + 382 =
2
829
|
15.
314 + 274 =
588
2
|
16.
138 – 114 =
24
2
|
|
17.
582 + 196 =
778
2
|
18.
509 – 95 =
414
2
|
19.
904 – 284 =
2
620
|
20.
518 – 24 =
2
494
|