Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
97 + 854 =
2
951
|
2.
597 + 154 =
751
2
|
3.
57 + 330 =
387
2
|
4.
58 – 25 =
2
33
|
|
5.
651 – 595 =
2
56
|
6.
961 + 14 =
975
2
|
7.
185 – 73 =
2
112
|
8.
897 – 779 =
118
2
|
|
9.
978 + 8 =
986
2
|
10.
226 + 311 =
2
537
|
11.
85 – 74 =
1
11
|
12.
602 + 337 =
939
2
|
|
13.
711 – 538 =
2
173
|
14.
787 – 410 =
377
2
|
15.
32 + 471 =
503
2
|
16.
107 + 885 =
992
2
|
|
17.
406 + 272 =
678
2
|
18.
803 – 372 =
2
431
|
19.
608 – 64 =
544
2
|
20.
365 – 304 =
61
2
|