Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
187 + 259 =
446
2
|
2.
281 – 281 =
2
0
|
3.
899 – 258 =
641
2
|
4.
956 + 7 =
2
963
|
|
5.
522 + 421 =
943
2
|
6.
335 – 97 =
2
238
|
7.
836 + 32 =
2
868
|
8.
55 + 340 =
395
2
|
|
9.
358 + 68 =
2
426
|
10.
248 – 26 =
2
222
|
11.
505 + 438 =
943
2
|
12.
679 + 99 =
778
2
|
|
13.
373 – 284 =
2
89
|
14.
202 – 28 =
2
174
|
15.
692 – 65 =
627
2
|
16.
734 – 526 =
2
208
|
|
17.
302 + 414 =
2
716
|
18.
337 + 298 =
2
635
|
19.
712 + 185 =
2
897
|
20.
865 + 31 =
2
896
|