Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
618 + 9 =
2
627
|
2.
204 + 605 =
2
809
|
3.
633 + 9 =
2
642
|
4.
311 + 516 =
2
827
|
|
5.
212 – 93 =
2
119
|
6.
126 – 43 =
83
2
|
7.
387 – 32 =
355
2
|
8.
445 + 307 =
752
2
|
|
9.
85 + 727 =
2
812
|
10.
358 + 31 =
389
2
|
11.
861 – 744 =
117
2
|
12.
80 + 233 =
2
313
|
|
13.
697 + 281 =
978
2
|
14.
734 – 677 =
2
57
|
15.
317 – 94 =
2
223
|
16.
185 – 108 =
2
77
|
|
17.
458 – 389 =
2
69
|
18.
146 – 58 =
88
2
|
19.
328 – 127 =
2
201
|
20.
609 – 190 =
2
419
|