Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
42 – 36 =
1
6
|
2.
984 + 13 =
997
2
|
3.
386 + 503 =
2
889
|
4.
458 + 103 =
561
2
|
|
5.
730 – 612 =
2
118
|
6.
891 + 72 =
963
2
|
7.
499 – 276 =
223
2
|
8.
344 + 224 =
2
568
|
|
9.
29 + 63 =
2
92
|
10.
359 + 538 =
2
897
|
11.
343 + 630 =
2
973
|
12.
791 – 758 =
33
2
|
|
13.
98 – 19 =
2
79
|
14.
744 + 53 =
2
797
|
15.
488 – 49 =
439
2
|
16.
337 + 536 =
2
873
|
|
17.
137 – 57 =
80
2
|
18.
250 + 507 =
2
757
|
19.
62 – 7 =
55
2
|
20.
377 – 273 =
2
104
|