Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
359 + 551 =
910
2
|
2.
43 – 39 =
1
4
|
3.
430 – 288 =
142
2
|
4.
371 – 78 =
2
293
|
|
5.
21 + 314 =
335
2
|
6.
903 + 15 =
2
918
|
7.
877 + 110 =
2
987
|
8.
229 + 752 =
2
981
|
|
9.
329 – 10 =
319
2
|
10.
167 – 12 =
155
2
|
11.
883 + 16 =
899
2
|
12.
576 + 416 =
992
2
|
|
13.
847 – 843 =
4
1
|
14.
630 + 234 =
2
864
|
15.
678 + 225 =
903
2
|
16.
117 – 16 =
101
2
|
|
17.
634 + 200 =
834
2
|
18.
628 + 243 =
871
2
|
19.
838 + 100 =
2
938
|
20.
21 – 3 =
2
18
|