Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
577 + 203 =
780
2
|
2.
975 + 13 =
988
2
|
3.
507 – 331 =
2
176
|
4.
209 – 134 =
75
2
|
|
5.
614 + 20 =
2
634
|
6.
455 + 501 =
956
2
|
7.
652 – 382 =
2
270
|
8.
964 + 15 =
979
2
|
|
9.
718 – 65 =
653
2
|
10.
852 – 848 =
4
1
|
11.
488 – 94 =
394
2
|
12.
429 – 317 =
112
2
|
|
13.
934 – 450 =
2
484
|
14.
59 + 165 =
224
2
|
15.
688 + 300 =
2
988
|
16.
765 + 217 =
2
982
|
|
17.
555 + 183 =
2
738
|
18.
737 + 150 =
2
887
|
19.
963 – 738 =
225
2
|
20.
714 + 13 =
727
2
|