Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
123 + 66 =
189
2
|
2.
639 + 349 =
988
2
|
3.
200 – 184 =
2
16
|
4.
629 + 270 =
899
2
|
|
5.
921 + 2 =
2
923
|
6.
392 – 319 =
2
73
|
7.
150 + 604 =
2
754
|
8.
817 + 59 =
2
876
|
|
9.
189 + 693 =
882
2
|
10.
428 + 543 =
971
2
|
11.
277 + 433 =
2
710
|
12.
478 + 498 =
976
2
|
|
13.
499 – 254 =
245
2
|
14.
560 – 361 =
199
2
|
15.
637 + 91 =
2
728
|
16.
208 + 277 =
485
2
|
|
17.
911 + 33 =
2
944
|
18.
432 + 401 =
833
2
|
19.
686 + 33 =
719
2
|
20.
263 – 164 =
2
99
|