Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
683 – 161 =
522
2
|
2.
268 – 23 =
245
2
|
3.
803 + 172 =
975
2
|
4.
710 – 207 =
2
503
|
|
5.
176 + 80 =
2
256
|
6.
243 – 147 =
96
2
|
7.
291 + 229 =
2
520
|
8.
111 + 592 =
2
703
|
|
9.
486 – 207 =
2
279
|
10.
278 + 640 =
918
2
|
11.
949 – 463 =
486
2
|
12.
986 – 96 =
890
2
|
|
13.
158 – 39 =
2
119
|
14.
476 + 265 =
741
2
|
15.
538 + 133 =
671
2
|
16.
926 – 25 =
901
2
|
|
17.
979 + 17 =
2
996
|
18.
395 + 458 =
853
2
|
19.
979 + 19 =
998
2
|
20.
545 – 247 =
2
298
|