Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
438 – 386 =
2
52
|
2.
353 – 73 =
2
280
|
3.
114 + 533 =
2
647
|
4.
669 + 203 =
2
872
|
|
5.
511 + 366 =
877
2
|
6.
692 + 49 =
2
741
|
7.
650 + 12 =
662
2
|
8.
371 – 234 =
137
2
|
|
9.
229 – 43 =
186
2
|
10.
70 – 62 =
1
8
|
11.
528 – 404 =
124
2
|
12.
836 + 51 =
2
887
|
|
13.
146 – 5 =
141
2
|
14.
50 – 25 =
25
2
|
15.
377 – 90 =
287
2
|
16.
669 – 372 =
2
297
|
|
17.
938 – 600 =
2
338
|
18.
747 – 83 =
664
2
|
19.
937 – 892 =
2
45
|
20.
113 – 80 =
33
2
|