Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
992 – 618 =
374
2
|
2.
124 – 76 =
2
48
|
3.
662 + 116 =
778
2
|
4.
423 – 23 =
400
2
|
|
5.
949 + 33 =
982
2
|
6.
995 + 2 =
2
997
|
7.
387 + 585 =
972
2
|
8.
389 – 214 =
2
175
|
|
9.
424 + 453 =
2
877
|
10.
107 – 56 =
2
51
|
11.
962 – 90 =
872
2
|
12.
335 – 225 =
110
2
|
|
13.
261 – 92 =
169
2
|
14.
882 + 87 =
2
969
|
15.
922 + 32 =
954
2
|
16.
879 + 96 =
2
975
|
|
17.
462 – 307 =
2
155
|
18.
664 + 301 =
2
965
|
19.
990 – 119 =
2
871
|
20.
369 – 367 =
1
2
|