Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
333 + 39 =
372
2
|
2.
666 – 647 =
2
19
|
3.
201 + 354 =
555
2
|
4.
980 – 320 =
2
660
|
|
5.
617 + 239 =
2
856
|
6.
755 – 96 =
2
659
|
7.
188 – 154 =
34
2
|
8.
619 – 68 =
551
2
|
|
9.
595 – 46 =
549
2
|
10.
954 + 24 =
2
978
|
11.
617 + 60 =
2
677
|
12.
255 – 38 =
217
2
|
|
13.
107 – 12 =
95
2
|
14.
565 – 187 =
378
2
|
15.
965 + 27 =
992
2
|
16.
874 + 60 =
934
2
|
|
17.
534 – 12 =
522
2
|
18.
856 – 621 =
235
2
|
19.
274 + 238 =
512
2
|
20.
810 – 64 =
2
746
|