Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
25 + 13 =
2
38
|
2.
689 + 5 =
694
2
|
3.
355 – 54 =
301
2
|
4.
176 – 92 =
84
2
|
|
5.
929 – 5 =
2
924
|
6.
710 + 171 =
881
2
|
7.
304 + 91 =
2
395
|
8.
641 + 341 =
2
982
|
|
9.
228 – 64 =
164
2
|
10.
292 – 139 =
2
153
|
11.
429 – 190 =
2
239
|
12.
868 + 68 =
936
2
|
|
13.
376 – 148 =
2
228
|
14.
787 – 341 =
2
446
|
15.
423 + 94 =
2
517
|
16.
187 + 3 =
190
2
|
|
17.
314 – 217 =
97
2
|
18.
558 – 372 =
186
2
|
19.
820 + 68 =
2
888
|
20.
978 + 12 =
2
990
|