Oefen de erbijsom en erafsom tot 1.000
In de mix
|
1.
98 + 205 =
303
2
|
2.
188 + 628 =
816
2
|
3.
953 – 180 =
2
773
|
4.
489 + 106 =
2
595
|
|
5.
57 – 44 =
1
13
|
6.
159 – 82 =
2
77
|
7.
553 + 103 =
2
656
|
8.
155 + 18 =
173
2
|
|
9.
682 – 323 =
2
359
|
10.
291 – 30 =
2
261
|
11.
843 – 710 =
2
133
|
12.
988 + 8 =
2
996
|
|
13.
680 + 239 =
2
919
|
14.
749 + 152 =
2
901
|
15.
106 + 633 =
739
2
|
16.
512 – 469 =
43
2
|
|
17.
316 + 98 =
2
414
|
18.
139 + 251 =
2
390
|
19.
826 + 16 =
842
2
|
20.
623 – 55 =
2
568
|