Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
232 + 474 =
706
2
|
2.
975 + 8 =
2
983
|
3.
937 – 482 =
2
455
|
4.
911 + 85 =
996
2
|
|
5.
138 – 47 =
2
91
|
6.
166 + 592 =
2
758
|
7.
246 – 190 =
2
56
|
8.
972 – 289 =
2
683
|
|
9.
911 + 53 =
964
2
|
10.
382 – 157 =
2
225
|
11.
20 – 1 =
19
2
|
12.
654 – 6 =
648
2
|
|
13.
365 – 181 =
2
184
|
14.
939 + 54 =
993
2
|
15.
57 + 306 =
2
363
|
16.
968 – 565 =
403
2
|
|
17.
119 + 390 =
2
509
|
18.
998 – 306 =
692
2
|
19.
314 – 214 =
2
100
|
20.
418 + 544 =
2
962
|