Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
436 + 146 =
582
2
|
2.
920 – 483 =
2
437
|
3.
180 – 12 =
2
168
|
4.
82 + 894 =
2
976
|
|
5.
902 + 27 =
2
929
|
6.
355 + 43 =
398
2
|
7.
128 – 73 =
2
55
|
8.
692 + 302 =
994
2
|
|
9.
496 – 193 =
2
303
|
10.
932 + 37 =
969
2
|
11.
302 – 134 =
168
2
|
12.
4 – 0 =
1
4
|
|
13.
97 – 63 =
2
34
|
14.
721 + 153 =
874
2
|
15.
632 – 444 =
2
188
|
16.
656 + 288 =
944
2
|
|
17.
89 + 271 =
2
360
|
18.
826 + 94 =
920
2
|
19.
785 + 131 =
2
916
|
20.
539 – 70 =
469
2
|