Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
435 + 161 =
2
596
|
2.
291 + 574 =
2
865
|
3.
540 + 186 =
726
2
|
4.
896 + 11 =
2
907
|
|
5.
155 – 119 =
36
2
|
6.
984 + 8 =
992
2
|
7.
294 – 261 =
33
2
|
8.
898 + 99 =
997
2
|
|
9.
887 – 80 =
2
807
|
10.
530 + 410 =
940
2
|
11.
920 – 508 =
412
2
|
12.
481 + 198 =
2
679
|
|
13.
450 + 330 =
780
2
|
14.
981 + 6 =
2
987
|
15.
814 + 38 =
2
852
|
16.
890 + 108 =
998
2
|
|
17.
376 + 374 =
2
750
|
18.
734 – 155 =
2
579
|
19.
572 + 317 =
2
889
|
20.
658 + 304 =
2
962
|