Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
729 + 67 =
796
2
|
2.
586 + 331 =
2
917
|
3.
42 – 37 =
5
1
|
4.
317 + 61 =
378
2
|
|
5.
483 + 110 =
2
593
|
6.
396 – 311 =
85
2
|
7.
416 – 161 =
255
2
|
8.
182 – 34 =
148
2
|
|
9.
830 + 0 =
2
830
|
10.
701 – 100 =
601
2
|
11.
642 – 481 =
161
2
|
12.
517 – 13 =
504
2
|
|
13.
931 – 494 =
2
437
|
14.
455 + 11 =
2
466
|
15.
83 – 2 =
2
81
|
16.
979 – 45 =
934
2
|
|
17.
501 – 489 =
1
12
|
18.
68 + 186 =
2
254
|
19.
49 + 205 =
2
254
|
20.
978 – 919 =
2
59
|