Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
599 – 561 =
2
38
|
2.
380 + 148 =
528
2
|
3.
184 + 202 =
386
2
|
4.
298 + 686 =
2
984
|
|
5.
182 – 112 =
70
2
|
6.
820 – 200 =
620
2
|
7.
74 – 73 =
1
2
|
8.
509 + 363 =
872
2
|
|
9.
626 + 246 =
872
2
|
10.
58 – 3 =
55
2
|
11.
66 + 839 =
905
2
|
12.
341 + 510 =
851
2
|
|
13.
218 + 594 =
2
812
|
14.
70 + 132 =
2
202
|
15.
519 – 201 =
2
318
|
16.
366 + 403 =
769
2
|
|
17.
67 + 232 =
2
299
|
18.
46 + 747 =
2
793
|
19.
943 + 43 =
986
2
|
20.
583 + 106 =
689
2
|