Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
121 + 405 =
526
2
|
2.
401 – 107 =
2
294
|
3.
152 – 106 =
46
2
|
4.
947 – 912 =
35
2
|
|
5.
435 + 52 =
2
487
|
6.
599 – 25 =
2
574
|
7.
780 + 68 =
2
848
|
8.
462 – 459 =
1
3
|
|
9.
766 + 140 =
906
2
|
10.
642 – 24 =
618
2
|
11.
110 + 309 =
419
2
|
12.
986 – 52 =
2
934
|
|
13.
380 + 134 =
2
514
|
14.
878 – 365 =
2
513
|
15.
728 – 449 =
279
2
|
16.
150 + 811 =
2
961
|
|
17.
608 + 93 =
2
701
|
18.
844 + 43 =
2
887
|
19.
294 – 8 =
2
286
|
20.
114 – 8 =
106
2
|